Katyn: not in the software I'm using yet...and, typicaly, the elipticals are still fairly close to circular unless its a wildly divergent object, such as some commets. I'm working on getting better shapes, though even if I do, some will still pass through suns
On the topic of movement, I surmise that tradelane rings are each on their own orbits, very carefully mapped/adjusted such that they maintain connection between the rotating points most of the time. This assumes that the distance between lanes is elastic, as it has to stretch and compress as the objects get further from one another..but other than that, there's nothing more complicated than basic rocket science involved in it.
I'm not reaaaly out to get anything useful, more, I'm continually fixing my suspension of disbelief by suspending more believable disbelieves.