This. Dragon Soul had us all bored to tears and we knew we had a frickin expansion soon; imagine the boredom if that was it for WoW; 4.3 forevermore. No patch in WoW's history is immune to this, dial it back and even if you get enough people at the start they will fast get bored of doing the same stuff over and over again. You are never going to be able to go back in time and recreate those old memories and relive them time and again.