1) I would like to come up with some kind of way to represent the Papal nobility and bourgeois of the city of Rome, which had a huge influence on the Papacy, and maybe the same dynamic that can happen in Constantinople, where certain sites can be Great Cities with patrician merchant families that are centred there.

2) I'd like to try and represent overseas trade, maybe using pilgrimage and other journey mechanics to travel to a foreign capital to sell goods and then purchase goods, this being something republic patricians could do.

3) I think Republics should probably dole out governor titles at the county level, and succession should happen there, and republics should by and large be Duchies, not Kingdoms, and a county should generate a patrician house and estate, a palazzo, which is barony level and fixed to the capital city. Even single county republics like Pisa should have some families jostling for power and influence.