I just haven't experienced an enmity problem in BC. I have a relic axe +1 and I generate more enmity than the PLD does (he just has a normal relic, and berserked crits on BB are beautiful), but he gets my enmity and I get his when we swap the bosses via Provoke. The only time enmity would be an issue would be near the start of a fight if someone decides to go balls to the wall before a tank can establish any enmity, but no one should be doing that. It just sounds like people aren't using their abilities optimally, and it's probably the tanks. I don't know what else to tell you.