While playing around with the small turntable, I realised it can also be used to make a strong open differential, as follows (the red part of the differential need not be present, depending on usage):
Top view :
Side View :
(lxf)
I'll be using this as the center differential for my "Yet Another Supercar (Gen II)" .
Another good place to use this is in mechanisms that uses those inner gears of a differential heavily - e.g. automatic transmissions that rely on a differential to detect overwhelming torque.