Just done with my team of 82s. Group configuration were Prot Paladin, Destro Warlock, Arcane Mage, Disc Priest and Elemental Shaman. I used CCs mainly on packs of mobs which had 2 healers.

Using 251s mostly with bits and pieces of quest reward greens and blues. I had 1 wipe on 1st boss, 1 wipe on 3rd boss and 1 wipe on final boss. thankfully no deaths on trash but the twin colossus were just a pain in the @ss, the casters barely made it out alive.

First, third and final bosses require alot of moving, specially the final boss. had few deaths but managed to squeeze the dps to clear the instance. Of course I am 82 and fully finished Vash zone now, so can't say it could be usefull if you are level 80. Hp surely starts to feel more important to survive some encounters.