One conclusion we came to is that large language models do not understand geometry, in a pretty fundamental way! They do understand pair wise relationships that are more topological in character. But that’s not quite the same thing.
The blocker on the text to concept art to 3D model to cad route is the meshes and geometry you’ll generate won’t have the easy adjusting and parameterization manipulations you can take for granted in human authored cad!
That’s also ignoring developing a robust geometry kernel that would live underneath all this!