If you were actually participating in the thread and contributing, instead of trolling you would have seen that much earlier in the thread I suggested that factions be determined by actual player choices in game (similar to choosing between Aldor and Scryer in TBC). So you would still have factions, but those would be determined by player choice, and not pigeon holed into a faction because of your aesthetic choices when selecting a race. I understand that it is WARcraft and keeping some form of conflict is really the back bone of the game, at the same time outside of PvP you are effectively cut off from playing with roughly 50% of the gaming community.
While on the subject of PvP going back to my point above (which you ignored) the PvP community has turned a blind eye to fighting their own faction in competitive PvP (rbgs and arena) why would this be any different? Why do you accept one and oppose the other?