Human AIDA having a breakdown and face-turning (and giving them an excuse to keep the actress around) would be awesome.
That was one of my favorite things about Illyria's arc from Angel. An old god coming back and realizing she has no place in the new world, so fuck it, I'll be a good guy for now...
It'd be neat if they work the same kind of magic with Aida. Like, oh shit, being human kind of sucks and I don't know what I am anymore, I guess I'll work with the good guys while I figure this out! Also they probably all hate me because I did some fucked up shit.