Interactions within stations.
There was something like this discussed looooooooong time ago, and about dockable planets and interactive ones.
Example would be corsairs invading cassablanca game, and hessians defending it.
Then it turns the game in some sort of FPS inside the base, and capture the flag or something effect kicks in.
Aside that, I wouldn't change a damn thing. Server is popular, but not overly populated or clogged. When that happens, maybe server will be able to afford loss of some players with restricting biggest capital ships to official factions only for example