WHM is much better now

[Gemina]

You didn't get the point at all. If I time Cure II to land after the tankbuster, chances are good that I don't need Benison anymore afterwards because the tank is out of danger zone already. Especially if your co-healer is worth their salt and heals as well when necessary. Shields are most useful when they are applied before the damage; afterwards, their usefulness is decreased drastically.

In A9S, for example, you applied Stoneskin before Ravensbeak to help the SCH mitigate as much DMG as possible. That's no longer possible in that way with Benison, because I have to heal first, then apply the shield, and if the tank is already topped, yay, no Lilly.

I'm afraid you're the one not getting the point. What ability does WHM have to shield an oncoming hit now that stoneskin is gone? And why, and HOW could a tank possibly be topped off with a single cure 2 after a buster? Pre damage mitigation falls on SCH or AST. That is what your Co healer should be doing since WHM is unable to do so.

Tell me, in your extensive savage history, does the mob divert its attention to someone other than the tank after a TB, or does it continue to try and kill him? If the answer is the later, the tank benefits from Benison. Shields have to be reapplied after they are stripped. WHM does this in an instant with Benison. And even if the mob does turn its attention to another player, you can slap them with the barrier.

Again, you can't really cast a bad shield. Especially one that is ogcd and MP free. Benison does have a duration, but if you're paying attention, this shouldn't be a problem.

You also might want to factor that WHM runs content other than raids.