Continuous movement stands
A stand for aircraft (usually remote) that after all turnaround procedures are done, instead of pushing back, the aircraft is able to pull through onto a taxiway on the other side, completely negating the need for a pushback vehicle.
Why it should be implemented:
With the advent of the de-icing stand, it has been shown that something similar can be done, it would provide more options for realism, and I personally think it looks really freakin cool.
Images, references or additional content: