Hi,
I thought I would share this idea. Don't get me wrong, I think GSX is a great add-on, I just think this would make things a little more realistic.
How about a bit of automation, such as you press start and it's brings up the stairs, start deboarding and the fuel truck comes, once that is finished then it automatically sends the catering trucks. Once the catering has finish and gone away then it can pause until you press a certain key and then boarding commences. Then it's just time to call for pushback.
When you land you select the follow me, when you park, shut down the engines then the stairs come and the whole things starts again. All automatic to save keep having to call the menu.