Is there a way to actually use Plenary Indulgence?

[magnanimousCynic]

right now it can only be used for +150 aoe potency 95% of the time in normal content, which is VERY underwhelming.

The issue you'd run into trying to make the 3 stacks relevant would cause the healing checks in casual content to be much more punishing to the classes who aren't WHM.

Would you want an encounter to require ~1,350 potency (3 Medica I's + 3 stacks of confessions) of quick aoe healing to safely survive?

Would you want to try to heal that as a SCH without needing to blow multiple cooldowns?

That's my reasoning for why Confession is fine in dungeons as a free half-Medica. Because there's other healers with less aoe healing than us.