This has all been taking a back seat due to other life commitments and priorities. However, now that Geometry Nodes has stabilised in Blender 3.1 I'm adding support in the Expressions add-on for Geometry Nodes and Compositor Nodes. Here's an example of the preset to generate geometry from a mathematical expression (similar to the built-in 'Add Mesh: Extra Objects' Math Function/Z Math Surface mesh option). Simply amend the text defining the geometry (in this case sin/cos functions based on the angle and distance from the centre) and click 'Update expression from Text block' to update the geometry.
It's still a 'work in progress' and lots more Geometry Nodes functionality to add in - and a good excuse to learn Geometry Nodes along the way. I'll upload to Github/Blendermarket once I've smoothed off the rough edges.
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