Not to be a giant spoil-sport, but, I honestly think the "compatibility list" is a better idea than the incompatibility list.
Why?
Because the compatibility list provides a place where the game can be seen and verified to have worked for someone, and you don't end up with 8 pages of people posting that a certain game does not work (because they burned it wrong, or tried to patch it in some arcane way).
If you see that a game "works" for someone in that list, all you need do is figure out how they did it, or post a thread asking about how they did it here, rather than cluttering up a thread of "incompatibility" with a game that is only incompatible for you.
Also, if the game doesn't work, you can clearly see the game in the compatibility list, and a description of how or why it fails, right there... no need to wade through pages looking for possible solutions.
Anyway, not trying to rain on anyone's parade, but, collecting all the information in a centralized place is most likely the optimal method. Stick with the compatibility list, please.