Ok so I haven't played Holy since around level 20. I went through the entire Heroic process as Disc, all PVP I've done as Disc, and basically I like the playstyle. But when a Holy Pally came into the raiding picture, it became apparent that I was going to have to Raid heals. When that happened it also became apparent that I'd probably have to switch to Holy.
So now I have a question for Pro Holy Priests out there that know what they're doing - because I still don't know the finer points. The question is this:
When you enter Chakra Sanctuary (AoE) it changes your Chastise into a ground AoE with a 28 second cooldown. You can keep Chakra Serenity up longer than 30 seconds by using State of Mind. This means it's takes away nothing from the Priest to use Holy Word: Sanctuary twice during a Chakra - once immediately and once at the end of the Chakra. But after 30 seconds, Chakra's cooldown ends, meaning you can switch Chakra to Serenity (Heal), with which Holy Word: Serenity does NOT share a Cooldown with Sanctuary. This mean's that by weaving back and forth with Chakras, a Priest can miss out on only a 3-5 seconds of a Sanctuary with the added benefit of having Serenity spells going.
An added benefit from weaving is that you are not inclined to use Heal anyways - Greater Heal, Circle of Healing, Prayer of Mending, etc all are relevant spells - the Priest only wants the Chakra: Serenity state in order to get a very cheap and powerful heal for the 30 seconds that the actual Chakra spell is in Cooldown. Once the CD is over, he will switch back to Sanctuary in order to do his Ground AoE.
Does anyone understand what I mean? I'm finding it hard to simply explain it. But basically, is this worth it to do? Chakra eats a GCD, but no mana. Theoretically the Priest is still getting heals off the entire time he is doing this.