I don't know your game/gameplay at all, but I don't think that it is really necessary to let the "level" collision tree rotate... it would be very hard to get gravity things working in this case I guess... Did you think about that? I mean, if you are walking withing your station, how will you apply the gravity force to player and objects when you station rotates and moves?

So a still "level" is the best here to make things easier in my opinion. It should be enough to let the camera rotate instead of your level, which will give the same visual result I guess.