And that's why I like coming here. Never considered most of those ideas. I've only actually "replaced" one label, and it was TMNT 2 on NES, because the label had already been almost completely peeled off. You couldn't tell what the game was unless you looked at the spine.
I'll probably try to either get a 2nd shell and put the label on it, or I really like the idea of finding a 'broken' game, especially since I don't have a case for it