I think we need to give the bosses chance to do direct crit auto attacks, that will kill a tank if they're not at 100% health. (so if their HP is 60'000 for example, it would do 59'999 damage, killing them even at full health if not in tank stance), and reduce enmity gains in DPS stance by 99% (perhaps make it so every attack they do in DPS stance reduces enmity). Make enmity actually have to be managed and you'll be able to reduce time in DPS stance. Enmity is literally given to tanks on a silver platter (even in DPS stance!), which is why most spend so long in DPS stance. Same for healers, our heals are so stupidly powerful that we're able to spend more time DPSing. I think I remember someone doing a Xelphatol run where their Regen and oGCD heals were enough to keep people alive, meaning they did something like 99% casts being damage spells. That would also need changing. Stop giving heals and enmity on a silver platter, and then we can spend more time healing.