The game has always had PVP since the beginning

The game has always had PVP since the beginning. Servers were a host of server were PVP related. on non pvp servers you could always /pvp and flag up for it. And you could duel (arena predecessor) They were unable/unwilling to balance it in nilla, and since then, they are likewise unable/unwilling to do so now.

From the PVE side of things, I think baring a few situations most bosses are immune to effects of CC,Wow Gold lets try a chain fear or Cyclone of say Arugal or Grull, Onyxia, Ragnaross? the Lich King maybe? Oh no wait those guys are all immune.. So, for bosses they can break game mechanics but not players, hmm.

Blizz can not balance the game unless they have simple everyone heals, everyone is ranged everyone is dps, and all racial abilities are the same. Hunters mages loc, you guys are ranged, shammy druid priest you guys heal and everyone else is melee dps, and of course everyone having 5 of the same things they can do and no difference in talent points or racial, they can then call it balanced... That is what is coming.