Idd, I have "overgeared" computer for that game and win 7 and still I have crap FPS in 25 man raids. Problem lies in game and mainly in proccessing data. GFX is fine, I can get 200FPS even more, but problem occurs where is a lot of other players or one group of players doing a lot of stuff (spells, fighting,...). SOme patches ago blizz put in official support for multicore proccessors and game got some FPS, but still it's not supported as it could be. So I say that they should first make 100% support for multicores and to make sure game runs smoothly on DX win machines. After they achieve that they should make support for other systems. Until than it's just waste of time. Linux is not for gaming and is rarely used by gamers. So conclusion is that is waste of time and resources to make support for linux while game has issues in other systems that are used by majority.
P.S.: and linux sux for gaming, deal with it, eat it and install a decent system for games!
P.S.S.: I voted no just because of that, I want better 100% support for my OS first than blizz can think about other less represented systems!