Cone/Chock placement option...per aircraft, cones can be placed in their appropriate positions.
We surely have placed cones in their appropriate positions, at least in general, because they are placed according to the engine position specified in the airplane configuration.
Note that, if you don't configure them in GSX, they might not be accurate, since they depend on the engine position in the aircraft.cfg, and we found *many* airplanes that have the engine position set wrong in the aircraft.cfg. That's why the GSX airplane configuration editor allows you to customize it: there wouldn't have been any need to have it, if we could rely on the aircraft.cfg being always correct.
Since GSX uses that information only for Cones placement, by editing the engine positions in GSX, you can basically place Cones as you want, without affecting the airplane flight modeling.
Wing walkers for block-in/out.
That's surely under consideration.
A path setter utility for push back/tow tugs
This will surely come.