I don't think Mana or Single Target heals are really meaningful. I did 10-man normal this last weekend without even having a replenishment in the raid and didn't have mana problems as Holy; granted, I'm fully ICC25 geared, but with Replenishment, mana really isn't an issue at all unless you just can't manage your cooldowns. Single Target Heals really don't mean much either because, whether your Holy or Disc, your primary concern is the raid. Sure, Disc can pop a Penance or Pain Suppression on the tank, but Holy can also drop a Serendipity Hasted Greater Heal or, more importantly, a Guardian Spirit. The only time I think tank heals matter is when a healer gets picked up by a Val'kyr, gets sucked into Frostmourne, or dies, and a 1-min CD on GS is plenty for managing that.Originally Posted by Azyoulike
That's why I say, I think basically Holy is at least as good as Disc, because while it's not as good at Infest, B&S helps a lot on Defile. So, sure, if Infest is a problem, then respeccing Discipline makes sense, but if it's not, or you were handling it exceptionally poorly as Holy (ie, not precasting PoH when spread out) then I don't think Disc helps. In fact, I think that especially on 10-man, Defile is the harder mechanic to manage because half the time the raid will be grouped up anyway, and CoH/WG/CH/HL-Splash will make PWS spam moot.