What is all this "Tank decides, rest follow" nonsense ?
If anything, roles "leading" the way are Tanks and Healers on an equal basis. When a Tank feels like doing mass pulls because he wants a fast clear, if the healer can't or don't want to do it that way, it'll likely be wipe. They both need to agree to speedrun beforehand.

I agree DPS have to shut up and deal with whatever pace has been set, though.


PS:Before you jump on me i play all roles regularly and apply what i just said to myself.