diff --git a/doc/_quarto.yml b/doc/_quarto.yml
index 3098996..b776d24 100644
--- a/doc/_quarto.yml
+++ b/doc/_quarto.yml
@@ -108,7 +108,7 @@ quartodoc:
       desc: Blender assets bundled w/Blender Maxwell
       contents:
         - assets
-        - assets.import_geonodes
+        - assets.geonodes
 
     - subtitle: "`bl_maxwell.nodeps`"
       desc: No-Dependency 
diff --git a/src/blender_maxwell/assets/__init__.py b/src/blender_maxwell/assets/__init__.py
index fefb20c..f6a2943 100644
--- a/src/blender_maxwell/assets/__init__.py
+++ b/src/blender_maxwell/assets/__init__.py
@@ -1,11 +1,11 @@
-from . import import_geonodes
+from . import geonodes
 
 BL_REGISTER = [
-	*import_geonodes.BL_REGISTER,
+	*geonodes.BL_REGISTER,
 ]
 
 BL_HOTKEYS = [
-	*import_geonodes.BL_HOTKEYS,
+	*geonodes.BL_HOTKEYS,
 ]
 
 __all__ = [
diff --git a/src/blender_maxwell/assets/assets.blend b/src/blender_maxwell/assets/assets.blend
index b293485..bdfeebf 100644
--- a/src/blender_maxwell/assets/assets.blend
+++ b/src/blender_maxwell/assets/assets.blend
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:faec3c9b23a081a7829eca1bfc8feef6f1458d808bc6b275a9d35ba7d33d97a5
-size 737120
+oid sha256:f39523534effa2218d088206a317a86c8a32c3d0a8e64594f3d2644b4b695276
+size 733040
diff --git a/src/blender_maxwell/assets/blender_assets.cats.txt~ b/src/blender_maxwell/assets/blender_assets.cats.txt~
deleted file mode 100644
index efd41a1..0000000
--- a/src/blender_maxwell/assets/blender_assets.cats.txt~
+++ /dev/null
@@ -1,10 +0,0 @@
-# This is an Asset Catalog Definition file for Blender.
-#
-# Empty lines and lines starting with `#` will be ignored.
-# The first non-ignored line should be the version indicator.
-# Other lines are of the format "UUID:catalog/path/for/assets:simple catalog name"
-
-VERSION 1
-
-783a7efe-c424-42b1-9771-42c862515891:Structures:Structures
-ccb80eec-7e20-453d-89fb-0486b7abf7d4:Structures/Primitives:Structures-Primitives
diff --git a/src/blender_maxwell/assets/geonodes.py b/src/blender_maxwell/assets/geonodes.py
new file mode 100644
index 0000000..47b2755
--- /dev/null
+++ b/src/blender_maxwell/assets/geonodes.py
@@ -0,0 +1,574 @@
+"""Provides for the linking and/or appending of geometry nodes trees from vendored libraries included in Blender maxwell."""
+
+import enum
+from pathlib import Path
+
+import bpy
+
+from blender_maxwell import contracts as ct
+from blender_maxwell.utils import logger
+
+log = logger.get(__name__)
+
+
+####################
+# - GeoNodes Specification
+####################
+# GeoNodes Paths
+## Internal
+GN_INTERNAL_PATH = ct.addon.PATH_ASSETS / 'internal'
+GN_INTERNAL_INPUTS_PATH = GN_INTERNAL_PATH / 'input'
+GN_INTERNAL_SOURCES_PATH = GN_INTERNAL_PATH / 'source'
+GN_INTERNAL_STRUCTURES_PATH = GN_INTERNAL_PATH / 'structure'
+GN_INTERNAL_MONITORS_PATH = GN_INTERNAL_PATH / 'monitor'
+GN_INTERNAL_SIMULATIONS_PATH = GN_INTERNAL_PATH / 'simulation'
+
+## Structures
+GN_STRUCTURES_PATH = ct.addon.PATH_ASSETS / 'structures'
+GN_STRUCTURES_PRIMITIVES_PATH = GN_STRUCTURES_PATH / 'primitives'
+GN_STRUCTURES_ARRAYS_PATH = GN_STRUCTURES_PATH / 'arrays'
+
+
+class GeoNodes(enum.StrEnum):
+	"""Defines the names of available GeoNodes groups vendored as part of Blender Maxwell.
+
+	The values define both name of the .blend file containing the GeoNodes group, and the GeoNodes group itself.
+	"""
+
+	# Node Previews
+	## Input
+	InputConstantPhysicalPol = '_input_constant_physical_pol'
+	## Source
+	SourcePointDipole = '_source_point_dipole'
+	SourcePlaneWave = '_source_plane_wave'
+	SourceUniformCurrent = '_source_uniform_current'
+	SourceTFSF = '_source_tfsf'
+	SourceGaussianBeam = '_source_gaussian_beam'
+	SourceAstigmaticGaussianBeam = '_source_astigmatic_gaussian_beam'
+	SourceMode = '_source_mode'
+	SourceEHArray = '_source_eh_array'
+	SourceEHEquivArray = '_source_eh_equiv_array'
+	## Structure
+	StructurePrimitivePlane = '_structure_primitive_plane'
+	StructurePrimitiveBox = '_structure_primitive_box'
+	StructurePrimitiveSphere = '_structure_primitive_sphere'
+	StructurePrimitiveCylinder = '_structure_primitive_cylinder'
+	StructurePrimitiveRing = '_structure_primitive_ring'
+	StructurePrimitiveCapsule = '_structure_primitive_capsule'
+	StructurePrimitiveCone = '_structure_primitive_cone'
+	## Monitor
+	MonitorEHField = '_monitor_eh_field'
+	MonitorPowerFlux = '_monitor_power_flux'
+	MonitorEpsTensor = '_monitor_eps_tensor'
+	MonitorDiffraction = '_monitor_diffraction'
+	MonitorProjCartEHField = '_monitor_proj_eh_field'
+	MonitorProjAngEHField = '_monitor_proj_ang_eh_field'
+	MonitorProjKSpaceEHField = '_monitor_proj_k_space_eh_field'
+	## Simulation
+	SimulationSimDomain = '_simulation_sim_domain'
+	SimulationBoundConds = '_simulation_bound_conds'
+	SimulationBoundCondPML = '_simulation_bound_cond_pml'
+	SimulationBoundCondPEC = '_simulation_bound_cond_pec'
+	SimulationBoundCondPMC = '_simulation_bound_cond_pmc'
+	SimulationBoundCondBloch = '_simulation_bound_cond_bloch'
+	SimulationBoundCondPeriodic = '_simulation_bound_cond_periodic'
+	SimulationBoundCondAbsorbing = '_simulation_bound_cond_absorbing'
+	SimulationSimGrid = '_simulation_sim_grid'
+	SimulationSimGridAxisAuto = '_simulation_sim_grid_axis_auto'
+	SimulationSimGridAxisManual = '_simulation_sim_grid_axis_manual'
+	SimulationSimGridAxisUniform = '_simulation_sim_grid_axis_uniform'
+	SimulationSimGridAxisArray = '_simulation_sim_grid_axis_array'
+
+	# Structures
+	## Primitives
+	PrimitiveBox = 'box'
+	PrimitiveSphere = 'sphere'
+	PrimitiveCylinder = 'cylinder'
+	PrimitiveRing = 'ring'
+	## Arrays
+	ArrayRing = 'array_ring'
+
+	@property
+	def dedicated_node_type(self) -> ct.BLImportMethod:
+		"""Deduces the denode type that implements a vendored GeoNodes tree (usually just "GeoNodes Structure").
+
+		Generally, "GeoNodes Structure' is the generic triangle-mesh node that can do everything.
+		Indeed, one could make perfectly useful simulations exclusively using triangle meshes.
+
+		However, when nodes that use geometry directly supported by `Tidy3D` might be more performant, and support features (ex. differentiable parameters) critical to some simulations.
+
+		To bridge the gap, this method provides a regularized hard-coded method of getting whichever node type is most appropriate for the given structure.
+
+		Warnings:
+			**The strings be manually checked, statically**.
+			Since we don't have easy access to the `contracts` within the sim node tree, these are just plain strings.
+
+			It's not ideal, definitely a lazy workaround, but hey.
+
+		Returns:
+			The node type (as a string) that should be created to expose the GeoNodes group.
+		"""
+		dedicated_node_map = {
+			GeoNodes.PrimitiveBox: 'BoxStructureNodeType',
+			GeoNodes.PrimitiveSphere: 'SphereStructureNodeType',
+			GeoNodes.PrimitiveCylinder: 'CylinderStructureNodeType',
+		}
+
+		if dedicated_node_map.get(self) is None:
+			return 'GeoNodesStructureNodeType'
+
+		return dedicated_node_map[self]
+
+	@property
+	def import_method(self) -> ct.BLImportMethod:
+		"""Deduces whether a vendored GeoNodes tree should be linked or appended.
+
+		Currently, everything is linked.
+		If the user wants to modify a group, they can always make a local copy of a linked group and just use that.
+
+		Returns:
+			Either 'link' or 'append'.
+		"""
+		return 'link'
+
+	@property
+	def parent_path(self) -> Path:
+		"""Deduces the parent path of a vendored GeoNodes tree.
+
+		Warnings:
+			The guarantee of same-named `.blend` and tree name are not explicitly checked.
+			Also, the validity of GeoNodes tree interface parameters is also unchecked; this must be manually coordinated between the driving node, and the imported tree.
+
+		Returns:
+			The parent path of the given GeoNodes tree.
+
+			A `.blend` file of the same name as the value of the enum must be **guaranteed** to exist as a direct child of the returned path, and must be **guaranteed** to contain a GeoNodes tree of the same name.
+		"""
+		GN = GeoNodes
+		return {
+			# Node Previews
+			## Input
+			GN.InputConstantPhysicalPol: GN_INTERNAL_INPUTS_PATH,
+			## Source
+			GN.SourcePointDipole: GN_INTERNAL_SOURCES_PATH,
+			GN.SourcePlaneWave: GN_INTERNAL_SOURCES_PATH,
+			GN.SourceUniformCurrent: GN_INTERNAL_SOURCES_PATH,
+			GN.SourceTFSF: GN_INTERNAL_SOURCES_PATH,
+			GN.SourceGaussianBeam: GN_INTERNAL_SOURCES_PATH,
+			GN.SourceAstigmaticGaussianBeam: GN_INTERNAL_SOURCES_PATH,
+			GN.SourceMode: GN_INTERNAL_SOURCES_PATH,
+			GN.SourceEHArray: GN_INTERNAL_SOURCES_PATH,
+			GN.SourceEHEquivArray: GN_INTERNAL_SOURCES_PATH,
+			## Structure
+			GN.StructurePrimitivePlane: GN_INTERNAL_STRUCTURES_PATH,
+			GN.StructurePrimitiveBox: GN_INTERNAL_STRUCTURES_PATH,
+			GN.StructurePrimitiveSphere: GN_INTERNAL_STRUCTURES_PATH,
+			GN.StructurePrimitiveCylinder: GN_INTERNAL_STRUCTURES_PATH,
+			GN.StructurePrimitiveRing: GN_INTERNAL_STRUCTURES_PATH,
+			GN.StructurePrimitiveCapsule: GN_INTERNAL_STRUCTURES_PATH,
+			GN.StructurePrimitiveCone: GN_INTERNAL_STRUCTURES_PATH,
+			## Monitor
+			GN.MonitorEHField: GN_INTERNAL_STRUCTURES_PATH,
+			GN.MonitorPowerFlux: GN_INTERNAL_STRUCTURES_PATH,
+			GN.MonitorEpsTensor: GN_INTERNAL_STRUCTURES_PATH,
+			GN.MonitorDiffraction: GN_INTERNAL_STRUCTURES_PATH,
+			GN.MonitorProjCartEHField: GN_INTERNAL_STRUCTURES_PATH,
+			GN.MonitorProjAngEHField: GN_INTERNAL_STRUCTURES_PATH,
+			GN.MonitorProjKSpaceEHField: GN_INTERNAL_STRUCTURES_PATH,
+			## Simulation
+			GN.SimulationSimDomain: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationBoundConds: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationBoundCondPML: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationBoundCondPEC: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationBoundCondPMC: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationBoundCondBloch: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationBoundCondPeriodic: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationBoundCondAbsorbing: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationSimGrid: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationSimGridAxisAuto: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationSimGridAxisManual: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationSimGridAxisUniform: GN_INTERNAL_SIMULATIONS_PATH,
+			GN.SimulationSimGridAxisArray: GN_INTERNAL_SIMULATIONS_PATH,
+			# Structures
+			## Primitives
+			GN.PrimitiveBox: GN_STRUCTURES_PRIMITIVES_PATH,
+			GN.PrimitiveRing: GN_STRUCTURES_PRIMITIVES_PATH,
+			GN.PrimitiveSphere: GN_STRUCTURES_PRIMITIVES_PATH,
+			## Arrays
+			GN.ArrayRing: GN_STRUCTURES_ARRAYS_PATH,
+		}[self]
+
+
+####################
+# - Import GeoNodes (Link/Append)
+####################
+def import_geonodes(
+	_geonodes: GeoNodes,
+	force_append: bool = False,
+) -> bpy.types.GeometryNodeGroup:
+	"""Given vendored GeoNodes tree link/append and return the local datablock.
+
+	- `GeoNodes.import_method` is used to determine whether it should be linked or imported.
+	- `GeoNodes.parent_path` is used to determine
+
+	Parameters:
+		geonodes: The (name of the) GeoNodes group, which ships with Blender Maxwell.
+
+	Returns:
+		A GeoNodes group available in the current .blend file, which can ex. be attached to a 'GeoNodes Structure' node.
+	"""
+	# Parse Input
+	geonodes = GeoNodes(_geonodes)
+	import_method = geonodes.import_method
+
+	# Linked: Don't Re-Link
+	if import_method == 'link' and geonodes in bpy.data.node_groups:
+		return bpy.data.node_groups[geonodes]
+
+	filename = geonodes
+	filepath = str(geonodes.parent_path / (geonodes + '.blend') / 'NodeTree' / geonodes)
+	directory = filepath.removesuffix(geonodes)
+	log.info(
+		'%s GeoNodes (filename=%s, directory=%s, filepath=%s)',
+		'Linking' if import_method == 'link' else 'Appending',
+		filename,
+		directory,
+		filepath,
+	)
+	bpy.ops.wm.append(
+		filepath=filepath,
+		directory=directory,
+		filename=filename,
+		check_existing=False,
+		set_fake=True,
+		link=import_method == 'link',
+	)
+
+	return bpy.data.node_groups[geonodes]
+
+
+####################
+# - GeoNodes Asset Shelf Panel for MaxwellSimTree
+####################
+ASSET_PANEL_NAME: str = 'blender_maxwell__node_asset_shelf'
+WM_ACTIVE_NODE_ASSETS: str = 'blender_maxwell__active_node_asset_list'
+WM_ACTIVE_ASSET_IDX: str = 'blender_maxwell__active_node_asset_index'
+
+
+class NodeAssetPanel(bpy.types.Panel):
+	"""Provides a panel that displays vendored, usable GeoNodes trees, and enables drag-and-drop support to easily drag them into the simulation node editor."""
+
+	## TODO: Provide an option that forces appending? So that users can modify from a baseline. Just watch out - dealing with overlaps isn't trivial.
+
+	bl_idname = ct.PanelType.NodeAssetPanel
+	bl_label = 'Node GeoNodes Asset Panel'
+	bl_space_type = 'NODE_EDITOR'
+	bl_region_type = 'UI'
+	bl_category = 'Assets'
+
+	@classmethod
+	def poll(cls, context: bpy.types.Context) -> bool:
+		"""Require window manager properties to show node assets.
+
+		Notes:
+			Run by Blender when trying to show a panel.
+
+		Returns:
+			Whether the panel can show.
+		"""
+		## TODO: Check that we're in a MaxwellSim node tree as well.
+		wm = context.window_manager
+		return hasattr(wm, WM_ACTIVE_NODE_ASSETS) and hasattr(wm, WM_ACTIVE_ASSET_IDX)
+
+	def draw(self, context: bpy.types.Context) -> None:
+		"""Draw the asset library w/drag support.
+
+		Notes:
+			Run by Blender when the panel needs to be displayed.
+
+		Parameters:
+			context: The Blender context object.
+				Must contain `context.window_manager` and `context.workspace`.
+		"""
+		layout = self.layout
+
+		# Draw the Asset Panel w/Drag Support
+		_activate_op_props, _drag_op_props = layout.template_asset_view(
+			# list_id
+			## Identifies this particular UI-bound asset list.
+			## Must be unique, otherwise weird things happen if invoked shown twice.
+			## We use a custom name, presuming only one tree is shown at a time.
+			## TODO: Allow several trees to show at once.
+			ASSET_PANEL_NAME,
+			# asset_library_[dataptr|propname]
+			## Where to find the asset library to pull assets from.
+			## We pull it from a global
+			context.workspace,
+			'asset_library_reference',
+			# assets_[dataptr|propname]
+			## The actual assets to provide user access to.
+			context.window_manager,
+			WM_ACTIVE_NODE_ASSETS,
+			# assets_[dataptr|propname]
+			## The currently selected asset to highlight.
+			context.window_manager,
+			WM_ACTIVE_ASSET_IDX,
+			# draw_operator
+			## The operator to invoke() whenever the user **starts** dragging an asset.
+			drag_operator=ct.OperatorType.GeoNodesToStructureNode,
+			# Other Options
+			## The currently selected asset to highlight.
+			# display_options={'NO_LIBRARY'},
+		)
+
+
+####################
+# - Append GeoNodes Operator
+####################
+def get_view_location(
+	region: bpy.types.Region, coords: tuple[float, float], ui_scale: float
+) -> tuple[float, float]:
+	"""Given a pair of coordinates defined on a Blender region, project the coordinates to the corresponding `bpy.types.View2D`.
+
+	Parameters:
+		region: The region within which the coordinates are defined.
+		coords: The coordinates within the region, ex. produced during a mouse click event.
+		ui_scale: Scaling factor applied to pixels, which compensates for screens with differing DPIs.
+			We must divide the coordinates we receive by this float to get the "real" $x,y$ coordinates.
+
+	Returns:
+		The $x,y$ coordinates within the region's `bpy.types.View2D`, correctly scaled with the current interface size/dpi.
+	"""
+	x, y = region.view2d.region_to_view(*coords)
+	return x / ui_scale, y / ui_scale
+
+
+class GeoNodesToStructureNode(bpy.types.Operator):
+	"""Operator allowing the user to append a vendored GeoNodes tree for use in a simulation."""
+
+	bl_idname = ct.OperatorType.GeoNodesToStructureNode
+	bl_label = 'GeoNodes to Structure Node'
+	bl_description = 'Drag-and-drop operator'
+	bl_options = frozenset({'REGISTER'})
+
+	@classmethod
+	def poll(cls, context: bpy.types.Context) -> bool:
+		"""Defines when the operator can be run.
+
+		Returns:
+			Whether the operator can be run.
+		"""
+		return context.asset is not None
+
+	####################
+	# - Properties
+	####################
+	_asset: bpy.types.AssetRepresentation | None = None
+
+	####################
+	# - Execution
+	####################
+	def invoke(
+		self, context: bpy.types.Context, _: bpy.types.Event
+	) -> set[ct.BLOperatorStatus]:
+		"""Commences the drag-and-drop of a GeoNodes asset.
+
+		- Starts the modal timer, which listens for a mouse-release event.
+		- Changes the mouse cursor to communicate the "dragging" state to the user.
+
+		Notes:
+			Run via `NodeAssetPanel` when the user starts dragging a vendored GeoNodes asset.
+
+			The asset being dragged can be found in `context.asset`.
+
+		Returns:
+			Indication that there is a modal running.
+		"""
+		self._asset = context.asset  ## Guaranteed non-None by poll()
+
+		# Register Modal Operator
+		context.window_manager.modal_handler_add(self)
+		context.area.tag_redraw()
+
+		# Set Mouse Cursor
+		context.window.cursor_modal_set('CROSS')
+
+		return {'RUNNING_MODAL'}
+
+	def modal(
+		self, context: bpy.types.Context, event: bpy.types.Event
+	) -> ct.BLOperatorStatus:
+		"""When LMB is released, creates a GeoNodes Structure node.
+
+		Runs in response to events in the node editor while dragging an asset from the side panel.
+		"""
+		# No Asset: Do Nothing
+		asset = self._asset
+		if asset is None:
+			return {'PASS_THROUGH'}
+
+		# Released LMB: Add Structure Node
+		## The user 'dropped' the asset!
+		## Now, we create an appropriate "Structure" node corresponding to the dropped asset.
+		if event.type == 'LEFTMOUSE' and event.value == 'RELEASE':
+			log.debug('Dropped Asset: %s', asset.name)
+
+			# Load Editor Region
+			area = context.area
+			editor_window_regions = [
+				region for region in area.regions.values() if region.type == 'WINDOW'
+			]
+			if editor_window_regions:
+				log.debug(
+					'Selected Node Editor Region out of %s Options',
+					str(len(editor_window_regions)),
+				)
+				editor_region = editor_window_regions[0]
+			else:
+				msg = 'No valid editor region in context where asset was dropped'
+				raise RuntimeError(msg)
+
+			# Check if Mouse Coordinates are:
+			## - INSIDE of Node Editor
+			## - INSIDE of Node Editor's WINDOW Region
+			# Check Mouse Coordinates against Node Editor
+			## The asset must be dropped inside the Maxwell Sim node editor.
+			if (
+				## Check: Mouse in Area (contextual)
+				(event.mouse_x >= area.x and event.mouse_x < area.x + area.width)
+				and (event.mouse_y >= area.y and event.mouse_y < area.y + area.height)
+			) and (
+				## Check: Mouse in Node Editor Region
+				(
+					event.mouse_x >= editor_region.x
+					and event.mouse_x < editor_region.x + editor_region.width
+				)
+				and (
+					event.mouse_y >= editor_region.y
+					and event.mouse_y < editor_region.y + editor_region.height
+				)
+			):
+				space = context.space_data
+				node_tree = space.node_tree
+
+				# Computing GeoNodes View Location
+				## 1. node_tree.cursor_location gives clicked loc, not released.
+				## 2. event.mouse_region_* has inverted x wrt. event.mouse_*.
+				##    -> View2D.region_to_view expects the event.mouse_* order.
+				##    -> Is it a bug? Who knows!
+				## 3. We compute it manually, to avoid the jank.
+				node_location = get_view_location(
+					editor_region,
+					[
+						event.mouse_x - editor_region.x,
+						event.mouse_y - editor_region.y,
+					],
+					context.preferences.system.ui_scale,
+				)
+
+				# Create GeoNodes Structure Node
+				## 1. Deselect other nodes
+				## 2. Select the new one
+				## 3. Move it into place
+				## 4. Redraw (so we see the new node right away)
+				geonodes = GeoNodes(asset.name)
+
+				log.info(
+					'Creating Node "%s" at (%d, %d)',
+					geonodes.dedicated_node_type,
+					*tuple(node_location),
+				)
+				bpy.ops.node.select_all(action='DESELECT')
+				node = node_tree.nodes.new(geonodes.dedicated_node_type)
+				node.select = True
+				node.location.x = node_location[0]
+				node.location.y = node_location[1]
+				context.area.tag_redraw()
+
+				# GeoNodes Structure Specific Setup
+				## Since the node doesn't itself handle the structure, we must.
+				## We just import the GN tree, then attach the data block to the node.
+				if geonodes.dedicated_node_type == 'GeoNodesStructureNodeType':
+					geonodes_data = import_geonodes(asset.name)
+					node.inputs['GeoNodes'].value = geonodes_data
+					## TODO: Is this too presumptuous? Or a fine little hack?
+
+			# Restore the Pre-Modal Mouse Cursor Shape
+			context.window.cursor_modal_restore()
+			return {'FINISHED'}
+
+		return {'RUNNING_MODAL'}
+
+
+####################
+# - Blender Registration
+####################
+ASSET_LIB_POSTFIX: str = ' | BLMaxwell'
+ASSET_LIB_SPECS: dict[str, Path] = {
+	'Primitives': GN_STRUCTURES_PRIMITIVES_PATH,
+	'Arrays': GN_STRUCTURES_ARRAYS_PATH,
+}
+
+
+@bpy.app.handlers.persistent
+def initialize_asset_libraries(_: bpy.types.Scene):
+	"""Before loading a `.blend` file, ensure that the WindowManager properties relied on by NodeAssetPanel are available.
+
+	- Several asset libraries, defined under the global `ASSET_LIB_SPECS`, are added/replaced such that the name:path map is respected.
+	- Existing asset libraries are left entirely alone.
+	- The names attached to `bpy.types.WindowManager` are specifically the globals `WM_ACTIVE_NODE_ASSETS` and `WM_ACTIVE_ASSET_IDX`.
+
+	Warnings:
+		**Changing the name of an asset library will leave it dangling on all `.blend` files**.
+
+		Therefore, an addon-specific postfix `ASSET_LIB_POSTFIX` is appended to all asset library names.
+		**This postfix must never, ever change, across any and all versions of the addon**.
+
+		Again, if it does, **all Blender installations having ever used the addon will have a dangling asset library until the user manually notices + removes it**.
+	"""
+	asset_libraries = bpy.context.preferences.filepaths.asset_libraries
+
+	# Guarantee All Asset Libraries
+	for _asset_lib_name, asset_lib_path in ASSET_LIB_SPECS.items():
+		asset_lib_name = _asset_lib_name + ASSET_LIB_POSTFIX
+
+		# Remove Existing Asset Library
+		asset_library_idx = asset_libraries.find(asset_lib_name)
+		if asset_library_idx != -1 and asset_libraries[asset_lib_name].path != str(
+			asset_lib_path
+		):
+			log.debug('Removing Asset Library: %s', asset_lib_name)
+			bpy.ops.preferences.asset_library_remove(asset_library_idx)
+
+		# Add Asset Library
+		if asset_lib_name not in asset_libraries:
+			log.debug('Add Asset Library: %s', asset_lib_name)
+
+			bpy.ops.preferences.asset_library_add()
+			asset_library = asset_libraries[-1]  ## Was added to the end
+			asset_library.name = asset_lib_name
+			asset_library.path = str(asset_lib_path)
+
+	# Set WindowManager Props
+	## Set Active Assets Collection
+	setattr(
+		bpy.types.WindowManager,
+		WM_ACTIVE_NODE_ASSETS,
+		bpy.props.CollectionProperty(type=bpy.types.AssetHandle),
+	)
+	## Set Active Assets Collection
+	setattr(
+		bpy.types.WindowManager,
+		WM_ACTIVE_ASSET_IDX,
+		bpy.props.IntProperty(),
+	)
+
+
+bpy.app.handlers.load_pre.append(initialize_asset_libraries)
+
+BL_REGISTER = [
+	NodeAssetPanel,
+	GeoNodesToStructureNode,
+]
+
+BL_HOTKEYS = []
diff --git a/src/blender_maxwell/assets/import_geonodes.py b/src/blender_maxwell/assets/import_geonodes.py
deleted file mode 100644
index e3b02db..0000000
--- a/src/blender_maxwell/assets/import_geonodes.py
+++ /dev/null
@@ -1,410 +0,0 @@
-"""Provides for the linking and/or appending of geometry nodes trees from vendored libraries included in Blender maxwell."""
-
-import enum
-from pathlib import Path
-
-import bpy
-
-from blender_maxwell import contracts as ct
-from blender_maxwell.utils import logger
-
-log = logger.get(__name__)
-
-
-####################
-# - GeoNodes Specification
-####################
-class GeoNodes(enum.StrEnum):
-	"""Defines available GeoNodes groups vendored as part of Blender Maxwell.
-
-	The value of this StrEnum is both the name of the .blend file containing the GeoNodes group, and of the GeoNodes group itself.
-	"""
-
-	# Node Previews
-	## Input
-	InputConstantPhysicalPol = '_input_constant_physical_pol'
-	## Source
-	SourcePointDipole = '_source_point_dipole'
-	SourcePlaneWave = '_source_plane_wave'
-	SourceUniformCurrent = '_source_uniform_current'
-	SourceTFSF = '_source_tfsf'
-	SourceGaussianBeam = '_source_gaussian_beam'
-	SourceAstigmaticGaussianBeam = '_source_astigmatic_gaussian_beam'
-	SourceMode = '_source_mode'
-	SourceEHArray = '_source_eh_array'
-	SourceEHEquivArray = '_source_eh_equiv_array'
-	## Structure
-	StructurePrimitivePlane = '_structure_primitive_plane'
-	StructurePrimitiveBox = '_structure_primitive_box'
-	StructurePrimitiveSphere = '_structure_primitive_sphere'
-	StructurePrimitiveCylinder = '_structure_primitive_cylinder'
-	StructurePrimitiveRing = '_structure_primitive_ring'
-	StructurePrimitiveCapsule = '_structure_primitive_capsule'
-	StructurePrimitiveCone = '_structure_primitive_cone'
-	## Monitor
-	MonitorEHField = '_monitor_eh_field'
-	MonitorPowerFlux = '_monitor_power_flux'
-	MonitorEpsTensor = '_monitor_eps_tensor'
-	MonitorDiffraction = '_monitor_diffraction'
-	MonitorProjCartEHField = '_monitor_proj_eh_field'
-	MonitorProjAngEHField = '_monitor_proj_ang_eh_field'
-	MonitorProjKSpaceEHField = '_monitor_proj_k_space_eh_field'
-	## Simulation
-	SimulationSimDomain = '_simulation_sim_domain'
-	SimulationBoundConds = '_simulation_bound_conds'
-	SimulationBoundCondPML = '_simulation_bound_cond_pml'
-	SimulationBoundCondPEC = '_simulation_bound_cond_pec'
-	SimulationBoundCondPMC = '_simulation_bound_cond_pmc'
-	SimulationBoundCondBloch = '_simulation_bound_cond_bloch'
-	SimulationBoundCondPeriodic = '_simulation_bound_cond_periodic'
-	SimulationBoundCondAbsorbing = '_simulation_bound_cond_absorbing'
-	SimulationSimGrid = '_simulation_sim_grid'
-	SimulationSimGridAxisAuto = '_simulation_sim_grid_axis_auto'
-	SimulationSimGridAxisManual = '_simulation_sim_grid_axis_manual'
-	SimulationSimGridAxisUniform = '_simulation_sim_grid_axis_uniform'
-	SimulationSimGridAxisArray = '_simulation_sim_grid_axis_array'
-
-	# Structures
-	## Primitives
-	PrimitiveBox = 'box'
-	PrimitiveRing = 'ring'
-	PrimitiveSphere = 'sphere'
-
-
-# GeoNodes Paths
-## Internal
-GN_INTERNAL_PATH = ct.addon.PATH_ASSETS / 'internal' / 'primitives'
-GN_INTERNAL_INPUTS_PATH = GN_INTERNAL_PATH / 'input'
-GN_INTERNAL_SOURCES_PATH = GN_INTERNAL_PATH / 'source'
-GN_INTERNAL_STRUCTURES_PATH = GN_INTERNAL_PATH / 'structure'
-GN_INTERNAL_MONITORS_PATH = GN_INTERNAL_PATH / 'monitor'
-GN_INTERNAL_SIMULATIONS_PATH = GN_INTERNAL_PATH / 'simulation'
-
-## Structures
-GN_STRUCTURES_PATH = ct.addon.PATH_ASSETS / 'structures'
-GN_STRUCTURES_PRIMITIVES_PATH = GN_STRUCTURES_PATH / 'primitives'
-
-GN_PARENT_PATHS: dict[GeoNodes, Path] = {
-	# Node Previews
-	## Input
-	GeoNodes.InputConstantPhysicalPol: GN_INTERNAL_INPUTS_PATH,
-	## Source
-	GeoNodes.SourcePointDipole: GN_INTERNAL_SOURCES_PATH,
-	GeoNodes.SourcePlaneWave: GN_INTERNAL_SOURCES_PATH,
-	GeoNodes.SourceUniformCurrent: GN_INTERNAL_SOURCES_PATH,
-	GeoNodes.SourceTFSF: GN_INTERNAL_SOURCES_PATH,
-	GeoNodes.SourceGaussianBeam: GN_INTERNAL_SOURCES_PATH,
-	GeoNodes.SourceAstigmaticGaussianBeam: GN_INTERNAL_SOURCES_PATH,
-	GeoNodes.SourceMode: GN_INTERNAL_SOURCES_PATH,
-	GeoNodes.SourceEHArray: GN_INTERNAL_SOURCES_PATH,
-	GeoNodes.SourceEHEquivArray: GN_INTERNAL_SOURCES_PATH,
-	## Structure
-	GeoNodes.StructurePrimitivePlane: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.StructurePrimitiveBox: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.StructurePrimitiveSphere: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.StructurePrimitiveCylinder: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.StructurePrimitiveRing: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.StructurePrimitiveCapsule: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.StructurePrimitiveCone: GN_INTERNAL_STRUCTURES_PATH,
-	## Monitor
-	GeoNodes.MonitorEHField: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.MonitorPowerFlux: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.MonitorEpsTensor: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.MonitorDiffraction: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.MonitorProjCartEHField: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.MonitorProjAngEHField: GN_INTERNAL_STRUCTURES_PATH,
-	GeoNodes.MonitorProjKSpaceEHField: GN_INTERNAL_STRUCTURES_PATH,
-	## Simulation
-	GeoNodes.SimulationSimDomain: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationBoundConds: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationBoundCondPML: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationBoundCondPEC: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationBoundCondPMC: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationBoundCondBloch: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationBoundCondPeriodic: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationBoundCondAbsorbing: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationSimGrid: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationSimGridAxisAuto: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationSimGridAxisManual: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationSimGridAxisUniform: GN_INTERNAL_SIMULATIONS_PATH,
-	GeoNodes.SimulationSimGridAxisArray: GN_INTERNAL_SIMULATIONS_PATH,
-	# Structures
-	GeoNodes.PrimitiveBox: GN_STRUCTURES_PRIMITIVES_PATH,
-	GeoNodes.PrimitiveRing: GN_STRUCTURES_PRIMITIVES_PATH,
-	GeoNodes.PrimitiveSphere: GN_STRUCTURES_PRIMITIVES_PATH,
-}
-
-
-####################
-# - Import GeoNodes (Link/Append)
-####################
-def import_geonodes(
-	geonodes: GeoNodes,
-	import_method: ct.BLImportMethod,
-) -> bpy.types.GeometryNodeGroup:
-	"""Given a (name of a) GeoNodes group packaged with Blender Maxwell, link/append it to the current file, and return the node group.
-
-	Parameters:
-		geonodes: The (name of the) GeoNodes group, which ships with Blender Maxwell.
-		import_method: Whether to link or append the GeoNodes group.
-			When 'link', repeated calls will not link a new group; the existing group will simply be returned.
-
-	Returns:
-		A GeoNodes group available in the current .blend file, which can ex. be attached to a 'GeoNodes Structure' node.
-	"""
-	if import_method == 'link' and geonodes in bpy.data.node_groups:
-		return bpy.data.node_groups[geonodes]
-
-	filename = geonodes
-	filepath = str(
-		GN_PARENT_PATHS[geonodes] / (geonodes + '.blend') / 'NodeTree' / geonodes
-	)
-	directory = filepath.removesuffix(geonodes)
-	log.info(
-		'%s GeoNodes (filename=%s, directory=%s, filepath=%s)',
-		'Linking' if import_method == 'link' else 'Appending',
-		filename,
-		directory,
-		filepath,
-	)
-	bpy.ops.wm.append(
-		filepath=filepath,
-		directory=directory,
-		filename=filename,
-		check_existing=False,
-		set_fake=True,
-		link=import_method == 'link',
-	)
-
-	return bpy.data.node_groups[geonodes]
-
-
-####################
-# - GeoNodes Asset Shelf Panel for MaxwellSimTree
-####################
-class NodeAssetPanel(bpy.types.Panel):
-	bl_idname = ct.PanelType.NodeAssetPanel
-	bl_label = 'Node GeoNodes Asset Panel'
-	bl_space_type = 'NODE_EDITOR'
-	bl_region_type = 'UI'
-	bl_category = 'Assets'
-
-	# @classmethod
-	# def poll(cls, context):
-	# return (
-	# (space := context.get('space_data')) is not None
-	# and (node_tree := space.get('node_tree')) is not None
-	# and (node_tree.bl_idname == 'MaxwellSimTreeType')
-	# )
-
-	def draw(self, context):
-		layout = self.layout
-		workspace = context.workspace
-		wm = context.window_manager
-
-		# list_id must be unique otherwise behaviour gets weird when the template_asset_view is shown twice
-		# (drag operator stops working in AssetPanelDrag, clickable area of all Assets in AssetPanelNoDrag gets
-		# reduced to below the Asset name and clickable area of Current File Assets in AssetPanelDrag gets
-		# reduced as if it didn't have a drag operator)
-		_activate_op_props, _drag_op_props = layout.template_asset_view(
-			'geo_nodes_asset_shelf',
-			workspace,
-			'asset_library_reference',
-			wm,
-			'active_asset_list',
-			wm,
-			'active_asset_index',
-			drag_operator=AppendGeoNodes.bl_idname,
-		)
-
-
-####################
-# - Append GeoNodes Operator
-####################
-def get_view_location(region, coords, ui_scale):
-	x, y = region.view2d.region_to_view(*coords)
-	return x / ui_scale, y / ui_scale
-
-
-class AppendGeoNodes(bpy.types.Operator):
-	"""Operator allowing the user to append a vendored GeoNodes tree for use in a simulation."""
-
-	bl_idname = 'blender_maxwell.blends__import_geo_nodes'
-	bl_label = 'Import GeoNode Tree'
-	bl_description = 'Append a geometry node tree from the Blender Maxwell plugin, either via linking or appending'
-	bl_options = frozenset({'REGISTER'})
-
-	####################
-	# - Properties
-	####################
-	_asset: bpy.types.AssetRepresentation | None = None
-
-	####################
-	# - UI
-	####################
-	def draw(self, _: bpy.types.Context) -> None:
-		"""Draws the UI of the operator."""
-		layout = self.layout
-		col = layout.column()
-		col.prop(self, 'geonodes_to_append', expand=True)
-
-	####################
-	# - Execution
-	####################
-	@classmethod
-	def poll(cls, context: bpy.types.Context) -> bool:
-		"""Defines when the operator can be run.
-
-		Returns:
-			Whether the operator can be run.
-		"""
-		return context.asset is not None
-
-	def invoke(self, context: bpy.types.Context, _):
-		return self.execute(context)
-
-	def execute(self, context: bpy.types.Context) -> ct.BLOperatorStatus:
-		"""Initializes the while-dragging modal handler, which executes custom logic when the mouse button is released.
-
-		Runs in response to drag_handler of a `UILayout.template_asset_view`.
-		"""
-		asset: bpy.types.AssetRepresentation = context.asset
-		log.debug('Dragging Asset: %s', asset.name)
-
-		# Store Asset for Modal & Drag Start
-		self._asset = context.asset
-
-		# Register Modal Operator & Tag Area for Redraw
-		context.window_manager.modal_handler_add(self)
-		context.area.tag_redraw()
-
-		# Set Modal Cursor
-		context.window.cursor_modal_set('CROSS')
-
-		# Return Status of Running Modal
-		return {'RUNNING_MODAL'}
-
-	def modal(
-		self, context: bpy.types.Context, event: bpy.types.Event
-	) -> ct.BLOperatorStatus:
-		"""When LMB is released, creates a GeoNodes Structure node.
-
-		Runs in response to events in the node editor while dragging an asset from the side panel.
-		"""
-		if (asset := self._asset) is None:
-			return {'PASS_THROUGH'}
-
-		if event.type == 'LEFTMOUSE' and event.value == 'RELEASE':
-			log.debug('Released Dragged Asset: %s', asset.name)
-			area = context.area
-			editor_region = next(
-				region for region in area.regions.values() if region.type == 'WINDOW'
-			)
-
-			# Check if Mouse Coordinates are:
-			## - INSIDE of Node Editor
-			## - INSIDE of Node Editor's WINDOW Region
-			if (
-				(event.mouse_x >= area.x and event.mouse_x < area.x + area.width)
-				and (event.mouse_y >= area.y and event.mouse_y < area.y + area.height)
-			) and (
-				(
-					event.mouse_x >= editor_region.x
-					and event.mouse_x < editor_region.x + editor_region.width
-				)
-				and (
-					event.mouse_y >= editor_region.y
-					and event.mouse_y < editor_region.y + editor_region.height
-				)
-			):
-				log.info(
-					'Asset "%s" Released in Main Window of Node Editor', asset.name
-				)
-				space = context.space_data
-				node_tree = space.node_tree
-
-				# Computing GeoNodes View Location
-				## 1. node_tree.cursor_location gives clicked loc, not released.
-				## 2. event.mouse_region_* has inverted x wrt. event.mouse_*.
-				##    - View2D.region_to_view expects the event.mouse_* order.
-				##    - Is it a bug? Who knows!
-				## 3. We compute it manually, to avoid the jank.
-				node_location = get_view_location(
-					editor_region,
-					[
-						event.mouse_x - editor_region.x,
-						event.mouse_y - editor_region.y,
-					],
-					context.preferences.system.ui_scale,
-				)
-
-				# Create GeoNodes Structure Node
-				## 1. Deselect other nodes
-				## 2. Select the new one
-				## 3. Move it into place
-				## 4. Redraw (so we see the new node right away)
-				log.info(
-					'Creating GeoNodes Structure Node at (%d, %d)',
-					*tuple(node_location),
-				)
-				bpy.ops.node.select_all(action='DESELECT')
-				node = node_tree.nodes.new('GeoNodesStructureNodeType')
-				node.select = True
-				node.location.x = node_location[0]
-				node.location.y = node_location[1]
-				context.area.tag_redraw()
-
-				# Import & Attach the GeoNodes Tree to the Node
-				geonodes = import_geonodes(asset.name, 'append')
-				node.inputs['GeoNodes'].value = geonodes
-
-			# Restore the Pre-Modal Mouse Cursor Shape
-			context.window.cursor_modal_restore()
-			return {'FINISHED'}
-
-		return {'RUNNING_MODAL'}
-
-
-####################
-# - Blender Registration
-####################
-# def initialize_asset_libraries(_: bpy.types.Scene):
-# bpy.app.handlers.load_post.append(initialize_asset_libraries)
-## TODO: Move to top-level registration.
-
-asset_libraries = bpy.context.preferences.filepaths.asset_libraries
-if (
-	asset_library_idx := asset_libraries.find('Blender Maxwell')
-) != -1 and asset_libraries['Blender Maxwell'].path != str(ct.addon.PATH_ASSETS):
-	bpy.ops.preferences.asset_library_remove(asset_library_idx)
-
-if 'Blender Maxwell' not in asset_libraries:
-	bpy.ops.preferences.asset_library_add()
-	asset_library = asset_libraries[-1]  ## Since the operator adds to the end
-	asset_library.name = 'Blender Maxwell'
-	asset_library.path = str(ct.addon.PATH_ASSETS)
-
-bpy.types.WindowManager.active_asset_list = bpy.props.CollectionProperty(
-	type=bpy.types.AssetHandle
-)
-bpy.types.WindowManager.active_asset_index = bpy.props.IntProperty()
-## TODO: Do something differently
-
-BL_REGISTER = [
-	# GeoNodesAssetShelf,
-	NodeAssetPanel,
-	AppendGeoNodes,
-]
-
-BL_HOTKEYS = [
-	# {
-	# '_': [
-	# AppendGeoNodes.bl_idname,
-	# 'LEFTMOUSE',
-	# 'CLICK_DRAG',
-	# ],
-	# 'ctrl': False,
-	# 'shift': False,
-	# 'alt': False,
-	# }
-]
diff --git a/src/blender_maxwell/assets/internal/monitor/_monitor_eh_field.blend b/src/blender_maxwell/assets/internal/monitor/_monitor_eh_field.blend
new file mode 100644
index 0000000..fe5e702
--- /dev/null
+++ b/src/blender_maxwell/assets/internal/monitor/_monitor_eh_field.blend
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:a7459adc5923562dc295a5ee65b662d3bd26abb7e75c6612a48ee8db9d30fe68
+size 874743
diff --git a/src/blender_maxwell/assets/internal/monitor/_monitor_power_flux.blend b/src/blender_maxwell/assets/internal/monitor/_monitor_power_flux.blend
new file mode 100644
index 0000000..bcd4320
--- /dev/null
+++ b/src/blender_maxwell/assets/internal/monitor/_monitor_power_flux.blend
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:8198f28fb0ef9803ac98624cee3a449a251677f7e5caa4951d5322684367540e
+size 865119
diff --git a/src/blender_maxwell/assets/internal/simulation/_simulation_sim_domain.blend b/src/blender_maxwell/assets/internal/simulation/_simulation_sim_domain.blend
new file mode 100644
index 0000000..e202dba
--- /dev/null
+++ b/src/blender_maxwell/assets/internal/simulation/_simulation_sim_domain.blend
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:5a989ca283df0b9be0dc0c3005d3be13335b0b54968d87209562ae2ac97993ff
+size 805812
diff --git a/src/blender_maxwell/assets/internal/source/_source_plane_wave.blend b/src/blender_maxwell/assets/internal/source/_source_plane_wave.blend
new file mode 100644
index 0000000..f354a99
--- /dev/null
+++ b/src/blender_maxwell/assets/internal/source/_source_plane_wave.blend
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:e19965400c8d26c20cf5e2318162532fbdcc15297d41e4e6eee83cad1808d3ba
+size 805477
diff --git a/src/blender_maxwell/assets/internal/structure/_structure_primitive_box.blend b/src/blender_maxwell/assets/internal/structure/_structure_primitive_box.blend
new file mode 100644
index 0000000..25c9a63
--- /dev/null
+++ b/src/blender_maxwell/assets/internal/structure/_structure_primitive_box.blend
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:189773c90bec67c272cf9270e096c0b19ad41f57f829f616e44a388f35680d7a
+size 855469
diff --git a/src/blender_maxwell/assets/internal/structure/_structure_primitive_ring.blend b/src/blender_maxwell/assets/internal/structure/_structure_primitive_ring.blend
new file mode 100644
index 0000000..17b6db9
--- /dev/null
+++ b/src/blender_maxwell/assets/internal/structure/_structure_primitive_ring.blend
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 883891
diff --git a/src/blender_maxwell/assets/internal/structure/_structure_primitive_sphere.blend b/src/blender_maxwell/assets/internal/structure/_structure_primitive_sphere.blend
new file mode 100644
index 0000000..b29aca9
--- /dev/null
+++ b/src/blender_maxwell/assets/internal/structure/_structure_primitive_sphere.blend
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
+oid sha256:ee2fbe2560a62f9d1d5c331cd284bdd11d970c40fe923c770326b40adab4749e
+size 853546
diff --git a/src/blender_maxwell/assets/structures/arrays/array_ring.blend b/src/blender_maxwell/assets/structures/arrays/array_ring.blend
new file mode 100644
index 0000000..69d4699
--- /dev/null
+++ b/src/blender_maxwell/assets/structures/arrays/array_ring.blend
@@ -0,0 +1,3 @@
+version https://git-lfs.github.com/spec/v1
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+size 911025
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deleted file mode 100644
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diff --git a/src/blender_maxwell/assets/structures/primitives/sphere.blend b/src/blender_maxwell/assets/structures/primitives/sphere.blend
index 41de196..128688a 100644
--- a/src/blender_maxwell/assets/structures/primitives/sphere.blend
+++ b/src/blender_maxwell/assets/structures/primitives/sphere.blend
@@ -1,3 +1,3 @@
 version https://git-lfs.github.com/spec/v1
-oid sha256:9621bca9d715216b78310d2154440e1c875c1e5239377e5e8e8b47fb7be4f61e
+oid sha256:cff3151287c8e991aa49cd8717de1e94ccaec1b2d8adb5087ee5b31d1e513c7d
 size 853330
diff --git a/src/blender_maxwell/contracts/operator_types.py b/src/blender_maxwell/contracts/operator_types.py
index c95c326..998b312 100644
--- a/src/blender_maxwell/contracts/operator_types.py
+++ b/src/blender_maxwell/contracts/operator_types.py
@@ -16,6 +16,8 @@ class OperatorType(enum.StrEnum):
 
 	ConnectViewerNode = enum.auto()
 
+	GeoNodesToStructureNode = enum.auto()
+
 	# Socket: Tidy3DCloudTask
 	SocketCloudAuthenticate = enum.auto()
 	SocketReloadCloudFolderList = enum.auto()
diff --git a/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/node_types.py b/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/node_types.py
index 7429fcd..eafe451 100644
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/node_types.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/contracts/node_types.py
@@ -82,7 +82,7 @@ class NodeType(blender_type_enum.BlenderTypeEnum):
 	## Structures / Primitives
 	BoxStructure = enum.auto()
 	SphereStructure = enum.auto()
-	# CylinderStructure = enum.auto()
+	CylinderStructure = enum.auto()
 
 	# Bounds
 	BoundConds = enum.auto()
diff --git a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/monitors/eh_field_monitor.py b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/monitors/eh_field_monitor.py
index c7bac93..8356744 100644
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/monitors/eh_field_monitor.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/monitors/eh_field_monitor.py
@@ -3,10 +3,10 @@ import typing as typ
 import sympy as sp
 import tidy3d as td
 
+from blender_maxwell.assets.geonodes import GeoNodes, import_geonodes
 from blender_maxwell.utils import extra_sympy_units as spux
 from blender_maxwell.utils import logger
 
-from .....assets.import_geonodes import GeoNodes, import_geonodes
 from ... import contracts as ct
 from ... import managed_objs, sockets
 from .. import base, events
@@ -123,7 +123,7 @@ class EHFieldMonitorNode(base.MaxwellSimNode):
 			managed_objs['mesh'].bl_object(location=input_sockets['Center']),
 			'NODES',
 			{
-				'node_group': import_geonodes(GeoNodes.PrimitiveBox, 'link'),
+				'node_group': import_geonodes(GeoNodes.MonitorEHField),
 				'unit_system': unit_systems['BlenderUnits'],
 				'inputs': {
 					'Size': input_sockets['Size'],
diff --git a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/monitors/field_power_flux_monitor.py b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/monitors/field_power_flux_monitor.py
index 2470048..79334c5 100644
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/monitors/field_power_flux_monitor.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/monitors/field_power_flux_monitor.py
@@ -3,10 +3,10 @@ import typing as typ
 import sympy as sp
 import tidy3d as td
 
+from blender_maxwell.assets.geonodes import GeoNodes, import_geonodes
 from blender_maxwell.utils import extra_sympy_units as spux
 from blender_maxwell.utils import logger
 
-from .....assets.import_geonodes import GeoNodes, import_geonodes
 from ... import contracts as ct
 from ... import managed_objs, sockets
 from .. import base, events
@@ -124,7 +124,7 @@ class PowerFluxMonitorNode(base.MaxwellSimNode):
 			managed_objs['mesh'].bl_object(location=input_sockets['Center']),
 			'NODES',
 			{
-				'node_group': import_geonodes(GeoNodes.PrimitiveBox, 'link'),
+				'node_group': import_geonodes(GeoNodes.MonitorPowerFlux),
 				'unit_system': unit_systems['BlenderUnits'],
 				'inputs': {
 					'Size': input_sockets['Size'],
diff --git a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/sim_domain.py b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/sim_domain.py
index ba7f199..c924a71 100644
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/sim_domain.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/simulations/sim_domain.py
@@ -3,7 +3,8 @@ import typing as typ
 import sympy as sp
 import sympy.physics.units as spu
 
-from .....assets.import_geonodes import GeoNodes, import_geonodes
+from blender_maxwell.assets.geonodes import GeoNodes, import_geonodes
+
 from ... import contracts as ct
 from ... import managed_objs, sockets
 from .. import base, events
@@ -79,7 +80,7 @@ class SimDomainNode(base.MaxwellSimNode):
 			managed_objs['mesh'].bl_object(location=input_sockets['Center']),
 			'NODES',
 			{
-				'node_group': import_geonodes(GeoNodes.PrimitiveBox, 'link'),
+				'node_group': import_geonodes(GeoNodes.SimulationSimDomain),
 				'unit_system': unit_systems['BlenderUnits'],
 				'inputs': {
 					'Size': input_sockets['Size'],
diff --git a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/box_structure.py b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/box_structure.py
index e096972..c1e37be 100644
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/box_structure.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/box_structure.py
@@ -4,7 +4,8 @@ import sympy as sp
 import sympy.physics.units as spu
 import tidy3d as td
 
-from ......assets.import_geonodes import GeoNodes, import_geonodes
+from blender_maxwell.assets.geonodes import GeoNodes, import_geonodes
+
 from .... import contracts as ct
 from .... import managed_objs, sockets
 from ... import base, events
@@ -79,7 +80,7 @@ class BoxStructureNode(base.MaxwellSimNode):
 			managed_objs['mesh'].bl_object(location=input_sockets['Center']),
 			'NODES',
 			{
-				'node_group': import_geonodes(GeoNodes.PrimitiveBox, 'link'),
+				'node_group': import_geonodes(GeoNodes.StructurePrimitiveBox),
 				'unit_system': unit_systems['BlenderUnits'],
 				'inputs': {
 					'Size': input_sockets['Size'],
diff --git a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/sphere_structure.py b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/sphere_structure.py
index 75cfcc0..8363045 100644
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/sphere_structure.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/nodes/structures/primitives/sphere_structure.py
@@ -3,7 +3,8 @@ import typing as typ
 import sympy.physics.units as spu
 import tidy3d as td
 
-from ......assets.import_geonodes import GeoNodes, import_geonodes
+from blender_maxwell.assets.geonodes import GeoNodes, import_geonodes
+
 from .... import contracts as ct
 from .... import managed_objs, sockets
 from ... import base, events
@@ -18,11 +19,11 @@ class SphereStructureNode(base.MaxwellSimNode):
 	# - Sockets
 	####################
 	input_sockets: typ.ClassVar = {
+		'Medium': sockets.MaxwellMediumSocketDef(),
 		'Center': sockets.PhysicalPoint3DSocketDef(),
 		'Radius': sockets.PhysicalLengthSocketDef(
 			default_value=150 * spu.nm,
 		),
-		'Medium': sockets.MaxwellMediumSocketDef(),
 	}
 	output_sockets: typ.ClassVar = {
 		'Structure': sockets.MaxwellStructureSocketDef(),
@@ -82,7 +83,7 @@ class SphereStructureNode(base.MaxwellSimNode):
 			managed_objs['mesh'].bl_object(location=input_sockets['Center']),
 			'NODES',
 			{
-				'node_group': import_geonodes(GeoNodes.PrimitiveSphere, 'link'),
+				'node_group': import_geonodes(GeoNodes.StructurePrimitiveSphere),
 				'unit_system': unit_systems['BlenderUnits'],
 				'inputs': {
 					'Radius': input_sockets['Radius'],
diff --git a/src/blender_maxwell/node_trees/maxwell_sim_nodes/sockets/maxwell/medium.py b/src/blender_maxwell/node_trees/maxwell_sim_nodes/sockets/maxwell/medium.py
index 75c196c..ce619a1 100644
--- a/src/blender_maxwell/node_trees/maxwell_sim_nodes/sockets/maxwell/medium.py
+++ b/src/blender_maxwell/node_trees/maxwell_sim_nodes/sockets/maxwell/medium.py
@@ -10,24 +10,16 @@ from .. import base
 
 VAC_SPEED_OF_LIGHT = sc.constants.speed_of_light * spu.meter / spu.second
 
+FIXED_WL = 500 * spu.nm
+
 
 class MaxwellMediumBLSocket(base.MaxwellSimSocket):
 	socket_type = ct.SocketType.MaxwellMedium
 	bl_label = 'Maxwell Medium'
-	use_units = True
 
 	####################
 	# - Properties
 	####################
-	wl: bpy.props.FloatProperty(
-		name='WL',
-		description='WL to evaluate conductivity at',
-		default=500.0,
-		precision=4,
-		step=50,
-		update=(lambda self, context: self.on_prop_changed('wl', context)),
-	)
-
 	rel_permittivity: bpy.props.FloatVectorProperty(
 		name='Relative Permittivity',
 		description='Represents a simple, complex permittivity',
@@ -40,28 +32,13 @@ class MaxwellMediumBLSocket(base.MaxwellSimSocket):
 	)
 
 	####################
-	# - Socket UI
-	####################
-	def draw_value(self, col: bpy.types.UILayout) -> None:
-		col.prop(self, 'wl', text='λ')
-		col.separator(factor=1.0)
-
-		split = col.split(factor=0.35, align=False)
-
-		col = split.column(align=True)
-		col.label(text='ϵ_r (ℂ)')
-
-		col = split.column(align=True)
-		col.prop(self, 'rel_permittivity', text='')
-
-	####################
-	# - Computation of Default Value
+	# - FlowKinds
 	####################
 	@property
 	def value(self) -> td.Medium:
 		freq = (
 			spu.convert_to(
-				VAC_SPEED_OF_LIGHT / (self.wl * self.unit),
+				VAC_SPEED_OF_LIGHT / FIXED_WL,
 				spu.hertz,
 			)
 			/ spu.hertz
@@ -76,25 +53,21 @@ class MaxwellMediumBLSocket(base.MaxwellSimSocket):
 	def value(
 		self, value: tuple[spux.ConstrSympyExpr(allow_variables=False), complex]
 	) -> None:
-		_wl, rel_permittivity = value
+		rel_permittivity = value
 
-		wl = float(
-			spu.convert_to(
-				_wl,
-				self.unit,
-			)
-			/ self.unit
-		)
-		self.wl = wl
 		self.rel_permittivity = (rel_permittivity.real, rel_permittivity.imag)
 
-	def sync_unit_change(self):
-		"""Override unit change to only alter frequency unit."""
-		self.value = (
-			self.wl * self.prev_unit,
-			complex(*self.rel_permittivity),
-		)
-		self.prev_active_unit = self.active_unit
+	####################
+	# - UI
+	####################
+	def draw_value(self, col: bpy.types.UILayout) -> None:
+		split = col.split(factor=0.35, align=False)
+
+		col = split.column(align=True)
+		col.label(text='ϵ_r (ℂ)')
+
+		col = split.column(align=True)
+		col.prop(self, 'rel_permittivity', text='')
 
 
 ####################