The queues are no different from patch 3.1 onward in HW. DRK and AST ended up not being the best things in the world. My queue times in 3.2 used to be such that we constantly made jokes about how DPS were wasting away waiting on their queue. Right now as a MCH if I queue for kugane right now I'll be in in 10-15 minutes. Not that different from when HW launched.

If I can find it, I'll look for the interview where Yoshi said that when they looked at the data the only people who played the new tanks and healers were the ones who played that role anyways. Given how many factors could have influenced each other, it's impossible to say they weren't influenced by the state of the new tank and healer, but it does show that the only thing that changes for DPS queues is the times first few patches of it.