The problem is meta. PvP players make up a substantial population of WoW players, and if you suddenly got rid of the faction animosity, you're killing PvP. Yeah, there are ways to explain around it, but none of the ones I've heard have been particularly compelling. I for one would not be heartbroken if PvP went away, but it won't.
Snarky: Adjective - Any language that contains quips or comments containing sarcastic or satirical witticisms intended as blunt irony. Usually delivered in a manner that is somewhat abrupt and out of context and intended to stun and amuse.