Plenary Indulgence. Really?

[Silver-Strider]

Well, you're wrong about there not being anywhere you need rapid AoE healing.

And stop looking at 3-stack as the skill's only use case. A raidwide AoE goes out and you Medica*2 to heal people back up. But did you actually need that full 600p? Or would 450p and saving the second GCD have been sufficient?

I stated rarely, as in not common; never said there weren't instances that required mass AoE healing. However, even if it becomes commonplace that AOE healing would be outright required in the majority of content, the problem with PI is that you have very little control on the skill's execution. You have 10 seconds to use the skill and have to wait a minute before you can use it again, putting a lot of limits on an already situational skill and making it have the exact same problem as the original iteration of PI in that it's not openly available to use when needed.

Also, a flaw in your example is that, in order for PI to get the 450 potency in your example, I would have needed to use 3 AoE heals to make PI have a 450 potency. Now, since you said I'd be saving a GCD by just popping PI, that would most likely mean I already popped Medica 2 as that much damage in that quick a succession would more than justify using Medica 2 for the regen without it being an immediate overheal but by using PI, I'm further risking that possibility to occur and with the now minute long CD of PI.

From my experience in V1S today, here's what happened. Everyone got hit by Levinbolt and would rush in to the middle to stack. I was already in the middle as I hadn't moved out and already had medica 2 running after the Levinbolt hit, resulting in everyone being at a save enough health to get hit by the stack, after which, I'd cure 3. Now, I could hit PI after getting 2 confessions as everyone is still hurting but the problem is, I was not healing alone during this. The SCH with us was very adamant about using Indomitable as my Cure 3 was going off, resulting in everyone missing at most 1k health, leading Medica 2 into the overheal territory alone without PI. The only time I was ever able to use PI at all was after everyone drops down to 1 health but even then, the heal was so insignificant because there is no time whatsoever to really try and squeeze in a 2nd AoE heal before the blast goes out unless I Presence of Mind/Swiftcast it in there but between my heals and the SCH, no one really stayed at low health for more than a few seconds that even when PI was used, it felt largely unnecessary. Maybe if I had solo healed the fight, I'd sing a different tune but just from my experience, it doesn't feel at all helpful.