As far as my experience goes, only children to get all kinds of personality traits while growing up are ruler's children. I believe this is to save up CPU, but still after a few generations, none of your advisor families have any traits whatsoever. I find this a bit boring, so I was thinking that maybe those personalityless kids should have a random chance to get some personality traits when they finish school? It would only add additional actions to already happening events, so it shouldn't eat up that much CPU.
