COSMIC DE now runs on Asahi Linux, while cosmic-settings and cosmic-icons have been added to NixOS!
This news is awesome! With Slint, Iced and all the many projects working on Rust apps for COSMIC, and now having other distributions on board gives a lot of confidence in the quality of this desktop.
I understand the tiling features in COSMIC will be much more comprehensive than could be expected of the GNOME extension. I'm anticipating everything you said and more. It's working fine now in COSMIC DE already and has as much functionality as the extension has already.