Some things need revision. A towing tractor is not needed at parking ramps where the aircraft taxis forward on its own. You have to taxi through it.
Cars driving along taxiways don’t give way to the aircraft.
The ATC doesn’t warn you about them any more (and almost always since few Beta updates back ATC does not inform about planes on taxiways), cars don’t become transparent when you taxi over them, and sometimes the plane (a small one, like C208) flips over when it hits them.
How shall a pilot get into the cockpit of a Boeing or Airbus? Upon spawning, he’s standing right next to the door, and there’s no ladder or a Jetway connected to climb up (AI aircraft spawns at a Gate with Jetway connected). The pilot has to play a Harry the Potter with a magic Shift-C wand.
Also this summer with one of the Beta updates (when they remade the way passengers board from the bus) passengers de-boarding is broken - no way to do this in Free flight, there are no such an option in the ATC any more!!! This is a huge regression.