Is limit break not a thing?

[CorbinDallas]

If the standard is "absolutely mandatory for a clear" as you say, then healers have exactly one: Lucid Dreaming (maybe two if you count Swiftcast). None of the others are mandatory for a clear, and several of them are basically irrelevant.

It's an absurdist standard in the first place. Esuna's useful on several fights, including things you want to dismiss like people being hit by Hashmal's bleed. Here in reality, people get hit by stuff they shouldn't and being able to fix that without going to Raise is certainly helpful for a speedier clear.

I'm just saying I've had more use out of Surecast of all things than Esuna since Stormblood dropped. Hell I don't even take it for the debuff in O5S because it simply isn't needed, since the debuff doesn't affect off globals like Tetragrammaton.

I'll dismiss poor play as poor play, I believe Esuna is a wasted ability and the healer role actions are abysmally thought out and need a good rework.

[Tridus]

and the healer role actions are abysmally thought out and need a good rework.

That part is entirely true.