The game said it was not meant to be balanced, but I believe -and please correct me if I'm wrong- that while being evil and doing terrible things may eventually lead to you being able to turn lich/vampire, that's not a talent that's just a trait that occurs. I think that the people the soulborn engine decides are meant to fight it will probably acquire talents that will aid them on their quest. But I do think that it's an awesome idea for people as pure as their counterparts are dark to have the opportunity to become like superhuman saints or angels etc