What are your favourite ways to manage politics and the family tree in Rome II?
One of mine is to re-name an army after a rival party, always appoint a general from that party to lead the army (when possible) and attach a dignitary with the Advisor skill. Win battles with the general, promote the general and level up the dignitary's advisor skill, and you'll get a big boost to the rival party's loyalty - as long as you keep the general alive.