Good N3S story. You should talk to NK about the story NES proposal; he's working on the street plan for the capital city of the Republic. I'm sure he would appreciate your input! I personally would appreciate ideas on governmental structure; I want it to be a little obtuse and complicated, incorporating Hanseatic and old Oxford University governance structures.
A general history of Dis and the Choir would also be helpful. I'm considering having my city-state led by a rogue member of the Choir who is generally benevolent, but who is either asleep, slowly dying due to a curse, or partially insane. Still trying to figure it out.
I haven't read much Vance either, though I also see elements of the Prince of Nothing trilogy that Perf got me involved in.