hey Mr. Capitalist,
I'd really like to help with your mod, I have a fair bit of experience modding particularly event codding though I havn't really been involved in any formal projects before. And in answer to question, the way to do it would be to combine not age = 1, with rulerchild and bastard triggers IMHO.
Okay, this guy is going to help with formal event stuff. If you want,
I can do the meat if you want to do the potatoes. Unfortunetally, events are a major portion to this, and I'll get the new traits to you so it makes a bit of sense. And if we can, I am going to open up a forum or something to work on this together. Maybe an IRC chan.