[Blissey]

I think aoe heals need to be looked at for sure. Malmelo, cantus, phoenix, mass graft and healing discharge need to be looked at specifically, and balanced accordingly. It's not a matter of nerfing heals across the board, and elves aren't really the issue. It's the fact that aoe healing in a large team is too good.

I think a formula that would work is that the total healing is split across all targets, and increases by 20% per extra target.
1 target = 100%
2 targets = 60% each
3 targets = 46.66%
4 targets=  40% each

And so on. Meaning the aoe is still useful, but you have to think about how you're using these, and ideally you are trying to avoid healing people who are already full hp. I think it makes sense, because unlike something like an aoe attack where it's simply an area where an explosion/thing occurs, the healing you administer isn't going to be an "explosion" of healing, it's you pouring healing energy into specific targets. If healing worked like an "area" thing, we would be abusing aoe healing in character. Get all the patients of the hospital in a little pile, and blast them with healing. In reality, each patient must be healed specifically since releasing an area of healing would be a huge waste of focus. Using an area spell is more efficient, but it still requires your focus to be split. I think this is especially true for Malmelo. It's not like you're doing a map-wide healing wave, you're targeting your allies specifically, thus it makes sense that the power is split.

I think it's a pretty balanced way to do it, since it doesn't make it useless when doing single target healing. It nerfs those healers in large groups specifically. Also it could maybe smartly ignore full hp targets, perhaps with a trait. In addition, if using this method, elves wouldn't be op anymore either, but they would still be great healers.

I actually kind of like this and I think Autumn's original suggestion was something like this, but this is also fair as someone who mains a healer.