If they would make the cure and cure 2 have a much higher, like 75%, and the aoe heals cure 3, medica and medica 2 have the 20%, then I would be happy.

But since it is a single target heal to the person with the stacks and the AoE part is to trigger anyone with a stack that is within 30y of you, that I am finding it only possible to have the tank get the heals from this.