

Personally, I’m quite happy with Plasma Wayland on multiple machines and distros. However, Plasma has already been forked to create Sonic DE: https://github.com/Sonic-DE/sonic-win No idea if this will gain any traction once Plasma drops X11. For now, the activity seems to focus on the readme file…



Debian strongly recommends against adding repos from other distributions or other versions of Debian: https://wiki.debian.org/DontBreakDebian#Don.27t_make_a_FrankenDebian Doing that can easily break your system. They also recommend against adding repos for specific software packages (e.g. for LibreWolf), but this is generally less problematic.
Personally, on Debian, I try to get packages in this order: