I was referring mostly to healers without an assload of spirit regen, a la Paladins and Shaman.

Since replenishment buffs don't stack and potions are limited to 1 per fight, I can't help but wonder how difficult mana management will be, especially since Paladin Divine Plea isnt trainable until lvl 71.

I'll give you the AoE threat, but thats not exactly what im talkin about, people gotta get used to their rotations and such with new skills and everything out. It always tends to mess with people with a massive patch/change like this. Especially with the healer changes that are hitting... it'll be interesting to see how it works out.