I've been thinking. Back in the 80's A roleplaying magazine had ideas for either buying or earning a title. Why not allow a character that earns a title to pay to upgrade his title to a higher 1?. See below for a example
If A very Rich Male Pc saves A Princess and is rewarded by being made A Fairly Senior Baron who rules A Fairly Large Barony what's to stop him using roughly 60% of his fortune to upgrade his title to Senior Baron and use most of the rest to upgrade his domain into A Large Barony?
If A very Rich Male Pc saves A Princess and is rewarded by being made A Fairly Senior Baron who rules A Fairly Large Barony what's to stop him using roughly 60% of his fortune to upgrade his title to Senior Baron and use most of the rest to upgrade his domain into A Large Barony?