I would hope such a feature includes the ability to decide the route in order to not run afoul of online or offline atc.
This doesn't have any specific relationship with that feature, but falls into the general case of GSX not being constantly aware of any ground movements around it. Doing this would mean an entirely new kind of problems/issues, with traffic deadlocks, etc., so it's not going to happen soon, surely not in the current version.
It's already possible to have *SOME* kind of airplane towing, using the Custom Pushback nodes feature, indicating another parking as the destination of the custom pushback. The pushback truck IS able to tow the airplane everywhere around the airport and, once the first pushback ends in another parking, nothing prevents to ask for another one.
This might be done as custom pushback for those parking specifically used as to have airplanes staying overnight.