With all this talk on Cataclysm healing changes, I hear a lot of people saying "Well, I'm glad my dual spec is Ret!". After reading countless pages on forums all over, and blue posts galore, it seems that BC-style healing is back in the game (minus down ranked heals). With nerfs to mana regen and replenishment, more mana cost on cleanse, and basically that looming danger of seeing those dreaded words, "Not enough mana", it seems that every healer is going to need more of a brain then WotLK demands.
From the words of Ghostcrawler...
"Today, in LK, healing risks feeling even more like whack-a-mole. Injury? Heal. Injury? Heal. You're testing your reflexes more than your decision-making ability. Whack-a-mole can be challenging, but it doesn't have much depth. It's easy to add depth though. Let's start with the notion that there are two hammers. The little hammer can dispatch most of those moles, but sometimes you can use your big hammer too. The big hammer has limited charges or whatever. Now let's have some of the moles pop out a little slower so that you have time to consider which hammer to use. See where I'm going with this?"
In short, we will be relying more on reactive healing then proactive. It initially feels like it takes away the comfort that a hpala currently has in this expansion, but for the most part I welcome the challenge. It's like the way tanks are right now. That will be the same situation for healers for Cata. The dedicated geared healers will keep going; the rest will switch to dps.
EDIT: Reference to the GC thread.
http://forums.worldofwarcraft.com/th...02681&sid=1#37