"Perfection" is such a bizarre concept in the context of Rihakuverse, tbh.
I kinda wanna see if we could get a training booster out of a Grace that brings us closer to perfection, but that's just what Edeldross does so it's probably redundant without a lot of effort.
If we didn't have Blood, a healing grace is on the docket at some point. Even with it, a grace to help Restore Verschlengorge on top of Blood and Artifice might be a huge leap for him.
Redemption, that's a loaded term. Could we figure out a method of Decimation mitigation with a Grace that does its best to increase the life force of those that we've ripped it from? Or an anti-collateral damage effect for Apocryphal procs, that would be nice about now.
Grace theorycrafting is super fun, I hope we grab some for real, soon. Might be a nice way to SAVE! Or not, there'll be a 7 Arete Grace, won't there.