THat is a great sketch own did. Exactly what i was talking about.
We need more ideas like that, so we can pick and chose the best
features.
Notice its a simple sketch, so dont let " i cant draw" keep you from
submitting something.
I really like the ideas owens included. I think there should be some sort of barrier
between the Jungle and the space port/town. I would flip the jungle and imperial tower
to oposite sides of the river.
If the imps need to enforce something, they gotta travel far through treachurous lands to do it.
Running with that.. Here is a built on version.

THe concept is that, there is a space port bringing people to the city, on the outside of that is the town with the
imperial command center at its center. Then a barrier from the "uncivilized" areas.
Jungle, a few settlements and natural features ( river mountains)