I'm sorry if someone have already talk about this.
But it would be interesting if Ck2 let the possibility to capture characters. I see many way to do this
- At the end of loss battle . Commander involved in the losing side have a slice chance to be captured
- At the end of a siege. Characters in the province sieged have a great chance to be captured if the siege is succesful.
- In a peace treaty , you could ask the losing king or duke or else to give you hostages , like important character ( son , daughter , courtier ).
As long as you have , imagine , the first son of a king as an hostage or a prisoner, he will never attack you , for an exemple , until his son get free
Hostage or prisoner will get back with ransom or a treaty ( thanks to the chancellor ). Or escape ( with help of your spymaster ).
I hope this sound realistic for this game.
Part of this behavior is already in the game