Ah... But what if you've pinned your libc ABI versioning and something like Pulse pulls in one of your forbidden symbols? You end up with a game that only the people that don't have that version of Pulse in their system, and so on and so forth. I know about this one from professional experience. And it can happen with distributions other than Ubuntu- and not just Gentoo or Arch either.
Just get your game out - we'll get it to run, then we'll tell everybody how we got it to run. Perhaps you could release a patch to support the odd corner-case we hit, while trying to run it. Or you could decide it's not worth it - that's still cool. As long as I have a game.