there is no aspect of wow's gameplay that can stand on its own. this is the mistake that blizzard made in retail, they segregated the game into parts without realizing that none of those parts are good enough to play by themselves.

there is another way, the 'niller way. pvp, dungeons and raids should all be part of the game, should all be constantly developed and iterated on and should not be segregated in any way. wow is greater than the sum of its parts. video games cannot be boiled down to systems.