Originally Posted by
Oneirophobia
That sounds like the issue. I generally do not need Shadow Mend except for emergencies or when Plea is 6 or higher, which makes Shadow Mend more mana efficient to get atonements out.
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To the main discussion, I LOVE Disc, but it needs work. It does. There isn't any way around that. I play a resto Shaman, a resto Druid, mistweaver Monk and primarily my holy/disc Priest. Only healer I don't play is Paladin.
Holy just kicks the crap out of Disc. In most situations for Disc on a raid scale*, Disc needs to either predict the incoming damage well in advance (IE very very reliant on addons like DBM) in order to properly prepare for it via Atonement application, or people start dying. Is it a bad thing to be heavily reliant on an addon? Up to you, for me, yes, because I can be another healer and not even have DBM.
*Aside from single target.
My main gripe with the spec is raid healing. You simply can't use PW: Radiance to raid heal. It is nearly only useful for getting atonement out semi-quickly, and then following up with penance. This current method of raid healing just does not cut it. What other tools do we have to raid heal? Halo? Okay, if it applied atonement to everything it hit, maybe. Holy has renew spam, prayer of mending, divine hymn, prayer of healing, you can even spec into circle of healing for some inefficient reason if that isn't enough. Disc has "spam Radiance well in advance to get Atonement out as fast as you can and pray Atonement doesn't time out so that when the damage hits everyone, you can attempt to heal it up with penance and shadowfiend / light's wrath." It is anxiety inducing. Meanwhile, on my resto druid or literally any other healer, I press tranquility or throw out a wild growth and call it a day.
Secondary gripe is mana. I can be as reckless as I please with my Holy spec and mana never seems to be an issue. With disc, ho' boy. Not really the case at all.
You know what, forget all the stuff I wrote above and let me just ask this, what does Disc do for your raid that Holy can't do better?
And don't say "extra damage," I don't think any fights in legion are going to be tuned around expecting a healer or two in your comp to be pulling meaningful numbers.