@staticsafe It annoys me that FSX's ATC was kinda glitchy and would get really confused at times, and X-Plane hasn't bothered to model ATC nearly as well. (Maybe Prepar3D is better? I haven't tried that.)
Then again, I think the people that are *REALLY* serious about ATC simulation... just do it themselves. As in, someone will park themselves in a tower in multiplayer, and just... be air traffic control for everyone else.