"OMG no nerfs!!!1"
The way AoE cures work in this game make it way too easy. There is literally no downside to it aside from getting more hate. The amount of HP cured is not even divided between the party members, they don't cost more MP nor need TP. You can just spam heals to win.
If we want harder combat and more strategy, this would be the first step to that goal. Make it cost much more mp, or have a TP requirement, or at least make it so not everyone in the range gets cured for full potency.