That already happened though. Tens of thousands of games on Steam can be played by hitting the install and then the play button. Only a few “competitive multiplayer” holdouts with rootkits and an irrational hatred of Linux don’t work.

I once switched from Debian i386 to amd64 in-place. That was MUCH harder than you would expect, I guess somewhere between medium and hard in your list. That server is still running that install btw, so in the end it all worked out.

Yes