I don't see the need to throw everyone at one server. They could have condensed the servers down to 2 or 3 main Pve and 2 to3 Pvp and still have populated servers. A fair few of the servers were either light to medium on the Pve side. With a couple medium to heavy, did we need the servers at full to give us more population, I don't think we did, a few servers at Medium to heavy would have sufficed. That would also have allowed for people coming to or back to the game with 1.3 and future expansions. If we start having 30 mins to an hour queues again, like at launch, I can see people leaving as well.