Darth Canoli
Arcane
I'd like Battle Brothers with a King of Dragon Pass meta game. Lead a minor house in the BB setting to hegemony over the other cadet families, then to maybe unite the great houses in a kingdom as the long campaign.
I'm not sure i'd like that if that means conquer all cities but just having the control of a little faction and develop the city or cities, managing the trade and eventually add some missing buildings while having the reins during the eventual war, choosing the goals and missions and eventually a diplomatic way out of it.
I don't think a full conquest would fit that game that much.
Developing the RPG side simultaneously would be great as well, there is room for greatness revolving around their battle system.