(Solar) systems are just a collection of local stars, planets and other stellar objects. Each planet will have statistics on its imports and exports, wealth, its population and faction standing. Planets can house facilities, fleets, armies and characters. Each system is connected to a trade route by one or more hyperspace route. Intersystem transit times are calculated into the travel time of ships. Maybe we could have a map for each planet (2D or 3D) representing a fleet’s position over the planet. For example, so a rebel fleet would be flying over rebel territory on a planet when it has an imperial presence. A map feature of sorts is implied.
Rebellion2:Systems and planets
From SWR Wiki

