I dream of a day when parametric CAD is bundled with a usable package library. Being able to `import` versioned parts would be a huge upgrade, and would lead to the development of better standard libraries.
There are also some land mines around the rendering process, e.g. shapes that render just fine as a preview, but will crash the CGAL renderer. I’ve also had the opposite happen. It seems like there’s room to add better validation (or maybe a way of automatically simplifying ASTs?) before they hit the renderer.