Way back, before BR came out, I tried my hand at doing a campaign where the players were domain rulers, and it was all done where the players would do their turn at home, turn it in and I’d evaluate it, randomly generate some events and give them back the results for the next turn. If a battle happened, the players would get together (with me as Referee) and it would be handled via Battlesystem/WHFB/BECMI Mass Combat Engine (depending on the players choice). We did not have a case where everyone got together to do any group RP, except in one or two occasions where one PC was visiting another on a diplomatic mission (and that ended when one PC decided to attempt to assassinate another visiting PC).
We finished that campaign a few months before Birthright hit the shelves. My experiences (and heartaches) with that homebrew campaign both had me yearning to try it, but also dreading attempting it, and with the little I played of the Gorgon’s Crown game, I couldn’t see how having an at-table game of Birthright would pan out without someone either sitting on their hands or playing subordinate to someone else’s regent.
As for the Council campaign, with my past experiences it would have likely worked until one PC or the other decided to multiclass and start grabbing another PC’s holdings because “they can do it better”
