This question contains spoilers for anyone who has not yet finished Diablo 3, so if you have not, STOP READING NOW unless you don't care about such things.
Okay, at the end of D3 after killing Diablo, we are given a cut scene of Tyrael deciding to re-take his place in Heaven's council "as a mortal"
So where does this leave Tyrael and his powers? As a mortal, does he still get to retain the powers he had as the "Angel of Justice?" If he regains his powers, could he possibly undo the injustice against Leah and grant her life again? Or is he now the "Angel of Wisdom" as he proclaims that "Justice has been done this day" and no longer the "Angel of Justice"
I am just very confused and looking for someone more versed than I in Diablo lore to shed some light on some of this.