I’m trying out something mildly nutty by putting .steam in /home/steam, then making user-neon, and symlinking so that I can try kde without reinstalling steam games. If I succeed I might try it with other files.
First of all you can check distrobox.it which can basically run Neon inside your distribution however you better set a different virtual home for neon in that case.
I would first tar the .steam to be on the safe side but steam is different, it is some kind of Ubuntu stable itself residing in that directory. Not a big time gamer but people laughed at Ubuntu for shipping its snap because of it.
Long story short I don’t think steam would have issues. I meant not to expect KDE guys to revert upgraded preferences back to KDE5 etc. You know they do such things and blame Linux/KDE etc.
I’ve created a specific partition for steam games so I can use games across distro without reinstalling them. You can tell Steam to go look in your partition for your games