 Downvote me if you will, but look at the history of WoW. It's there.

There's plenty of states of WoW, which is considered good. TBC being one of them. They did it with OSRS. It showed devs can learn from their mistakes, realize what made the original game bad and not go down that path. You're acting as if they'll reach BfA again not realizing what made it terrible. Yet they're consistently talking about retail issues, us not getting dungeon/raid finder and what not. I think it's safe to say they at least know kind of, what we don't want.

I'd take the risk trusting Blizzard with balancing, over seeing Post-Naxxramas content being cleared by 20+ Warriors/Mages, because they out DPS most other classes.