I think it is very counter-intuitive to inflict a penalty on a ganger when they level up. I had finally reached enough experience to level up my gang leaders agility, so I could increase his ranged attack resistance. However, upon leveling my ganger up in agility, I receive a Vice trait that gives me a -5 ranged evasion penalty! I don't understand why I am being punished for trying to level up my toon. I thought improving my characters was the whole point.
I've been playing Mordheim for years and was excited to play Necromunda, and have been going through it with its warts and all. But I honest have to say that having penalties inflicted on my character as a result of leveling them up just plain sucks, and it makes me not want to play the stupid game any more.