@bustr Autodesk in there wisdom introduced lisp in LT2024 as so many other CAD programs have it, so competition was knocking. But and a big but they did not include everything as pointed out by @Steven P there is some documentation about what is missing, mainly in the VL commands. For me "get-application" is a real big one as stops you talking to Excel directly.
I use Bricscad and as far as I can tell has a full implementation. May need to check their "Lite" version but have not heard of anything missing.