I think I know what you mean and I sympathize but would more time to triage make healing easier? The tough part about healing is making split second decisions.
I casted 2 spells in the wrong order in O6S and as a result the group lived and the tank died (no wipe but I was still pissed about my mistake).
To be frank though: I do not trust our developers to make it right.
WoW tried it and imho they failed to make healing fun. EG: they gave dispel a cooldown but often enough they still spam you with debuffs. Just feels bad.
They slowed down HP recovery but incoming damage is still spiky as ever.
I know I am egocentric here, but I'd hate for FF to try the same, fail and ruin what I enjoy the most about this game.