Quote Originally Posted by LokiRagnarok View Post
An approach might instead be to somehow shorten the time until a new generation is mature enough to procreate.
Something like Age maybe? Caveat: you then get into territory where the subjects are bodily mature for sex, but not mentally, and I'd count then coercing them into procreating as an Evil act.
I'd say you're probably well on your way to Evil the moment you want to use Saruman as your rolemodel and force grow an army of warriors.