Some content if you try to stay out of range while the tank gets attacked, he will begin to take too much damage (like in turn 1, the boss can put out some nasty double hits as soon as he's grabbed).

I'd just be careful with what you do. Some tanks are awful at getting hate, others are great. With trial and error, you'll get see what you can and can't do and what your limits are.

Medica 2 on the other hand, there's no point to even using it before a pull. You'll pull hate so fast if everyone that has the medica 2 regen starts attacking the boss/mob.