I think the thing to do is have just two or three additional solar systems. One can be a binary system. One can have a supergiant. One can have a brown dwarf. They\'d all be relatively close to Kerbin, and for the sake of simplicity, not moving at all relative to Kerbin. But the three or four systems we could have in KSP, could be real, actual systems. A host of planets, a hundred or more moons. Comets, a couple asteroid belts, an Oort cloud with a hidden planet or two. Some of this stuff probably needs to be simplified. You can\'t have millions of objects, but perhaps a thousand in each system.