If you are playing with tanks and healers who think they are better because they are tanks and healers, well.... find new friends. No one part of the Ops group is more important generally. There are fights where things are reliant on the tank, or heavy heals, or burst DPS but it isn't every fight.
Anyway, I did allow myself to get off topic a little. by counter productive I mean, when I first read about the game they wanted to make things customizable, almost every class could do most things (not always well but they could do it.), it seems that by forcing enrage timers you can't be either. Your class must be of a good spec rather than a jack of all trades spec and you have to have tier armor (which, for the sorc is fugly... I like my PvP set so much more).