There is one thing that bugs me a little. What was the real mission/ purpose of the angels in the first place? I mean those who got sent to the celest city with wiped memories were supposed to guard the flow of time. But what job did the others have? Were they just powerful beings floating around in heaven? Of course the archangels each represent / are supposed to represent a certain virtue of the creator but that can´t be all.
I´m thrilled what you´ll do with the purgatory, maybe Sasuke will find some new souls for a power up perhaps?