It would open up to an insane amount of new options when we could attach scenery to other scenery that is attached to a moving platform rather than it also being locked on the moving platform itself, or lock 1 point of scenery. I do not know if this is even possible with regards to the physics engine etc. But if there exist possibilities this would allow for totally new ways of advanced movement for moving part building. Think functions like creating custom pistons for advanced movement.