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I'd be interested to see what you see as the spells for other healers that fit into those four categories. As a mostly Shaman healer, I'm having a little trouble identifying what those would be.
Mana Tide fits nicely as the mana CD. SLT would probably count as a tank or raid save, but would it have to serve as both? Nature's Swiftness would seem to stretch the term "save" a bit, and Spiritwalker's Grace wouldn't fit in at all. But that's pretty much the extent of our CDs.
I've always felt that my priest and paladin buddies were a little stronger in the cooldown department, though.
2 years ago on Discipline: The Cooldown Spec