sure you use MR IIRC?
here are the DVIP events modded for MR, (they include events decreasing children stats)
here is another fun mod (new traits, like homosexual, epilepsy and orthodox patriarch)
this one you actually have to edit into the game. (add it manually) while the other one should be fine by just unzipping it into you CK MR
I also have edited my own game and added metallic CoA's for Duke's and up. if your're interested I can upload them aswell (they include other graphical changes aswell too many to count)