I know this is bad but as a BLM main I've learned to deal with bad tanks. I'm one of those casual BLMs who did not get quelling strikes because of it. When tanks want to open in dps stances I open with huge burst to force them back into tank stance. When tanks pull mobs and don't use tank stance or CDs, I slow down my dps and drag on. If I'm healing and your not using cooldowns then I will simply leave or vote kick but not before I kindly offer advice. If the tank if competent then I will watch my aggro and cooperate as a dps/healer. Cooperation is met with cooperation. Tanks who use dps stance in parties where dps outgears you and your not using CDs to supplement is unforgivable.