Yeah fair enough. I think we likely agree, too.

As I said in my other comment in this topic I actually would love to see an arch where the UI portions are split up with a background daemon holding buffers, lisp execution etc and then IPC to frontend pieces for window management and buffer editing.

So window management can be done by ... a window manager, but with intelligent interaction to the editor pieces so you don't lose all the awesome emacs stuff.

EDIT: I would say however that something like lem is probably more amenable to that refactoring/restructuring than GNU emacs, which is a single-threaded monolith.