As a dps single pulls are boring since I then have no reason to use my AOEs. Wall to wall means I can burn everything down in an instant. It's only tanks and heaters that should control wall to wall, the only reason not to do it is because either the tank or healer is not ready for it which will cause a wipe.
Wall to wall is not a new thing either its been a thing since I played in 2.0 because it is the optimal way to play.