The whole raise-as-a-role-action would only work if we go hard WoW-style:

* Raise is now a healer-only thing.
* Maximum number of uses over a whole combat encounter is capped based on the size, say 1 use for every 4 people in the instance. So 1 in a dungeon, 2 in a raid/trial, 6 in an alliance.

There is a lot of merit in this approach, WoW didn't get to it for no reason after all. They didn't start that way! But I don't think it'd work in FFXIV, because a lot of its design assumes spammable in-combat rezzes.