I heard the wayland compositor niri is inspired by paperwm, fyi. Also I doubt that cosmic will be very extendable when it releases, since most components are rewritten in rust and compiled, thus unless they specifically add some sort of scripting support extensions wont happen as easily as on gnome

Imo you immensely overestimate the capabilities of these models. What they show to the public are always hand picked situations even if they say they dont