If you produced a way of the player claiming territory, whether it be an amount of land, or a planet, or even an entire system, then it could open up a lot of things. Obviously they would have to "clear out" all current occupants first (exiting POIs and structures of other players). Once done the territory would be drawn in their faction's color. This opens up all kinds of multiplayer options for galaxy ownership wars. It also opens up single player story options, like having the player claim ownership of some system (heavily populated by existing zirax POIs), etc. Once they complete one system you can send them on to another harder system or two. How many hours would they spend killing every last POI in that area. I.e. things that you can add that don't take a lot of dev time, but will occupy a lot of the player's time and effort, keeping them busy for many hours.
