Different versions of Steam? What the fuck are you on about? You must be making your Linux gaming harder than it has to be. I've done all sorts of weird shit to install games and mods on Linux but I have never even seen an installation guide that requires somehow creating a different version of Steam.

Even with launch scripts and wine versions Lutris usually covers almost every game I've wanted to install. Lutris makes setting up right scripts and wine versions as easy as it is to install runtimes on Windows.