My approach here is to distribute ship functions as much as possible, so each room has at least some small purpose. Instead of a bridge with absolutely everything, you can have a sensor room encased in a geodesic dome, a shield room, a fire control tower, a map and navigation room and so on. If you want still more, you could separate control and maintenance, so you had a nice sleek sensor control room, then put the service panel in more industrial area.
Other ideas: an arboretum, which the original Enterprise supposedly had, a sub-hangar with an elevator to the flight deck, a bright/research room with airlocked rooms and its own transporter system, a torpedo room with big missiles on a rack. I'll keep thinking.
Chessboard could be fun once we have custom items! Or you could make an incredibly huge one on a planet with spaceships for pieces...
Other ideas: an arboretum, which the original Enterprise supposedly had, a sub-hangar with an elevator to the flight deck, a bright/research room with airlocked rooms and its own transporter system, a torpedo room with big missiles on a rack. I'll keep thinking.
Chessboard could be fun once we have custom items! Or you could make an incredibly huge one on a planet with spaceships for pieces...