Add gravity to Smearth
What I mean is when you have a space station in orbit around smearth and you have a pod attached to it with no fuel your out of luck getting back to smearth. When you undock it it will just stay in the same orbit and not make it's way back to smearth. In real life the gravity would pull the ship back to earth as long as there not burning there engines. Maybe you can fix this, if you can that would be great.
In real, everything that is in an Orbit will stay in a Orbit, until it will be deorbited by a rocket
I think I found a flaw though. If you did this it would also bring the space stations back to earth unless you use you engines to keep you self in space. And people have a lot of station and wouldn't be able to do all that. Well I wait to see what you say if it is possible or not.