Poison pegasi are a carry-over from the original mod. As the pegasi are effectively impossible to mass in the way poison archers get massed, I've let it ride. And of course it meshes with the nation description
I hadn't thought about the crystal priestess/sorceress bows, but it would make sense to change them over. They could even get poison bows, I guess.
Rite of Exposed Children cost is fixed. The school was set in the original mod, and I'm inclined to leave it there for the moment.