[MothEnthusiast]

While I hear what you're saying about AoE healing, it only really compounds the real issue with healing IMO. That being, as you said, that it's like hitting a person who has no defenses, but in reverse. It's 100% effectiveness for only 100% of the cost. This applies regardless of the battle size, 1v1, 2v2, 4v4v4v4, anything. AoE healing is just more easily felt because it's happening multiple times over.

AoE attacks exist, they just hit against defenses. So I feel like AoE healing being stupidly strong is just a symptom of all healing being very strong in any context where there's even skill and investment involved. Heal numbers need to be addressed, heal FP costs should be doubled, and I think more classes need options for the down-time in a fight. Probably in the reverse of the order I just presented, as a personal preference. Universal Shore-Up-tier healing would go a long way in making sure everyone can at least make use of the down-time in fights.