Originally Posted by
Packetdancer
I mean, this isn't strictly true. This game actually has a recurring mechanic where everyone in the party will be reduced to 1 HP and given a Doom debuff which must be cleansed by healing to full. The only oGCD which can resolve that entirely on its own is Macrocosmos, and prior to level 90 that mechanic does not trigger it. (Fun fact you discover if you do Seat of Sacrifice EX unsynced to mount farm.)
Now, I'm not saying that is a difficult mechanic by any stretch of the imagination. (Or that healing in this game is remotely in a good place.)