not necessarily the catalyst

I guess I agree with the sentiment, but not necessarily the catalyst. You seem to be taking issue with the concept of order of respect in the hierarchy of class. That those in your group owe you something as your class is first in the order of proper pulling etiquette.

Don't get me wrong, I certainly try my hardest to be polite in-game, but I think that hierarchy is sort cheap wow gold of out of the window right now. With the age of the expansion, people's time in these instances, level of gear (and health), and amount of threat redirect abilities, the natural order of Tank marks, Tank pulls, Wait three seconds, DPS, doesn't apply. It doesn't have to apply as it doesn't mean they'll waste time if they don't follow it (assuming proper play from all others).