This is a question mostly for the devs,
but now that the game is in closed testing stages, would it be possible to test it on a macbook pro, or a mac pro tower, to see how well it would run on that hardware (Running natively on Windows((bootcamp)), of course)?
Understandeably, Activision and id may not be too worried about supporting the Apple platform, but verifying that the game does run on those few configurations would add some more sales.
Apple does provide access to its hardware through a developers subscription:
http://developer.apple.com/labs/
Sure, there would be initial questions about support, but I think it would be worthwile to test the game on a few Apple configs, since they would be much easier to support than the myriad of wintel configs. And also, the game would not be running on OS X, but rather on winblows, so there would be no added support burden.
Thx.