I think it would be a good idea to sequence taxiing aircraft to runways, because…
It happens on expert all the time especially when the airport is crowded. For a server which enforces rules by ghosting, this is unacceptable in my opinion.
This is how the scenario will look like:
Aircraft A requests pushback while Aircraft B is already taxiing to departure runway. Aircraft C meanwhile is at the hold short line at the depature runway which is also in front of Aircraft B. ATC shall sequence Aircraft A to follow Aircraft B so as to prevent Aircraft A from jumping the departure queue.
If Aircraft A doesn’t listen to ATC, he shall be ghosted.