Sure, I just wanted to clarify and make it very clear that GNU Emacs in CL hasn't even been attempted since that was what the poster you originally replied to,

Sure, I just wanted to clarify and make it very clear that GNU Emacs in CL hasn't even been attempted since that was what the poster you originally replied to, equated "Emacs" with. As you said, the value lies primarily in the ecosystem. Common Lisp is by far the better language, but GNU Emacs is by far the most empowering/practical environment. I don't think enormous work would be needed, there are plenty of powerful shortcuts one could take (some ideas are in this thread) and Emacs Lisp can be made to run on top of Common Lisp but it's safe to say that for whatever reasons the will/intent is simply not there. Emacs Lisp is what we have to go on with and it's nice to see that it is not stagnating.