So, arranging yet another shortening of succession line, it suddenly struck me: people in reality are usually not that eager to crush baby skull as they are to murder some adult. But in CK it's entirely the opposite, you struggle to kill established rulers because none wishes to mess with him, but when you ask on a party: "Who wishes to slaughter King's newborn child?" everyone cries: "Me!". There should be some negative modifier, perhaps not for amoral people, something like: "Not a babykiller: -" At the same time, people shouldn't be so eager to kill children of someone they love, perhaps cleaning succession line of inbreds is fine, but assaulting the last heir and throwing a state into a turmoil?