I need an option to do it. same if you order gsx and no parking brake set. Do you get my point?
I don't get your point either.
Nowhere GSX is requiring you to start engines at any time during pushback so, just not start the engines, and if you still don't want to start engines even at the end of the pushback, when you open the menu to confirm engines are started, just choose to complete the pushback, so it will perform the disconnection and will terminate all services.