The way that I understood it from blizzcon and everything else up til this point....
Come a certain patch, you will be able to have 2 specs that you can switch to between any fight.
Hybrid will be able to DPS comparably to Pure.
Aside from needing 1 Pure for buffs/debuffs, why bring a "limited" class? If you can have a Hybrid do equal damage and can switch and be an efficient healer, why wouldn't you bring more of them? Am I missing something that makes this not possible? Or will this just make for less Pure DPS in raids?