I get the appeal of moving towards a more general lisp dialect, but does it have to be CL, because Scheme seems pretty reasonable too, which there are also full

I get the appeal of moving towards a more general lisp dialect, but does it have to be CL, because Scheme seems pretty reasonable too, which there are also full-fledged GPL implementations owned by the FSF. And there's already an effort to move Emacs to it, it's just not ready yet.