And yes, that was my first impression. I'm very used to PW:S spam, so this cooldown thing is strange and alien. But I do love circle of healing's group heal and wow, I have a fail angel now. My tank healing tools kinda stink (I miss my lasers), but Renew is actually half-way decent now. Still doesn't make up for the shield thing.
My keybinds haven't changed much (because confusing myself even more would be bad), but I think I need to stick Circle of Healing on its' own, really big bar. I keep hitting divine hymn or desperate prayer or hymn of hope instead.
As far as I can figure, holy healing goes like this...
Flash heal or renew. Throw a greater heal if you have 3 stacks of Serendipity (wth is Serendipity?). Repeat till coh off cooldown. Then coh again.
I am probably vastly oversimplifiying, as I have many more buttons I could be hitting. And I hear things about Guardian Spirit, so I should probably look into that.
This may end up being a very short-lived respec, or not. I am supposed to heal ICC 10 on Sat, after all, and having the extra flexibility would be nice. And I have all this tier 9 gear, might as well use it, right?