That looks like an awesome change and I like it. I also like that you can only assign aircraft to specific stands that fit the aircraft class, as well as requiring the stand to be connected to security. This seems to set it up nicely for assigning airlines to certain concourses, having separate security areas (i.e. terminals), setting up for international flights, connecting flights as well. Fantastic.
If a player wants to demolish a stand, would it make sense to require the player move all flights off it to another stand? Also, I guess we’d need a point at which it is too late to reassign - either aircraft is on approach, or some other point in time.