Back to the priests on here. GC is giving you all some much needed attention so what’s the general concensus here? Good or bad?
Shadow tree still being worked on
Because we’re not done. (src)
Prayer of Mending threat
We’ve really buffed threat generation for tanks. Even when broken classes were doing 4500 dps in raids, they weren’t pulling off the tanks. We’re trying to back off threat management as a major component of grouping (though we’re not removing it). Raid fights should be more about keeping people alive, knowing the fight, and coordinating with your group. As part of this philosophy, we are trying to make more consistent spells with odd threat rules, and PoM fell into that category.
When threat numbers are very low, then things like PoM going off or even a Renew tick can cause threat problems. We think this is a little sucky and are trying to come up with elegant ways to fix it. While the start of a fight can present this problem, I actually think it’s worse once a fight is well undeway and there are adds and spawns of some kind that go right to the healer.
Another reason we changed the way spells like PoM healed was so the healing credit would actually go to the Priest in mods that track such things. (src)
Ghostcrawler on Lightwell
I actually think Lightwell is borderline OP at the moment. 
The inherent design of this spell suffers from a fundamental problem that we’ve been working forever to solve. That is, with the possible exception of the tank, the raid generally assumes that healing is the sole responsibility of the healers and that if they take any time to heal themselves, they will “lose” the damage meters.
Lightwell has always been useful. It’s just most classes won’t take the time to use it. To be fair, when they tried in the past, they weren’t impressed with the results, or the charges went away as soon as they got close or whatever. It’s a pretty sweet heal now, so if people would just get over the (deserved) lolwell reputation of the past, they’d find it’s well worth the clicky.
Fortunately, Naxx, Chamber of the Aspects and Malygos do have several moments when you need to move, pause or otherwise hit a point in the fight when you can’t dps. That’s when Lightwell shines. (src)
Prayer of Divine Spirit is not giving the spell damage buff
We’ll look into it. (src)
As I mentioned the PoM change makes me nervous, but I’d have to see it in live to make that final call. I probably won’t be spamming it like I do now.