The bottom line for me is that Plenary Indulgence is better than it was before, but still disappointing in its implementation. Watching the party UI for confession stacks goes against the whole point of adding those secondary resource meters, the duration of confession is far too short now for strategic use, your co-healer can entirely negate your use of PI by topping people off right as you hit the button, etc.
I would have been perfectly happy if PI had just been turned into an instant aoe heal that used lilies and its healing determined by how many lilies it used at the time.