2) Even if other magic could alter body parts permanently, and there's no evidence this is the case, not everyone has access to it. One cannot walk into a Circle of Magi and go "remove boobs plz".

3) If your issue is "why not heal?", healing magic also does not do everything. Scars exist. Why does Cassandra have a scar on her chin? If anyone could go "heal scar plz", it'd be her. Recognize there's a difference between the way it works in gameplay and lore, with healing as many other things.

i mean, blood magic transition is canon because krem talked about it. obvi most people are too cowardly to use blood magic tho so surgery would prolly be the more common choice outside of the imperium.