It'd be cool to have actual 'triage' situations, but the reason it works better in, say, WOW, is that AOE healing is not plentiful. It's either kinda weak but spammable, or has some internal CD like WildGrowth, Circle of Healing, Dream Breath, Spiritbloom, PowerWord:Radiance, etc. In order to have a similar environment here, Medica and it's equivalents would need to have a 10s CD at minimum.
Maybe they could do it with a hacky workaround though, some kind of debuff that means 'only single target healing affects this player for X seconds', then have it applied to, idk, 2 DPS while they get clapped by adds.