I see that there are bot planes in the first public release of POSCON, I hope I am not wrong. If it doesn't, I hope POSCON can allow atc of less popular airports to generate traffic. For the first few times, atc has to manually type the route and other stuff of the flight plan for them. After the database is big enough, the system will auto pick a flight when the atc request generating a flight. To control these planes, atc has to manually select the speed and direction/taxiway for them with their mouse, while speaking on the radio simulating a conversation with the bot pilot.
POSCON do not need to simulate the bot pilot's reply. The atc will do the pilot's read-back too. POSCON only need to change the pitch of the atc when the atc is acting as a pilot.
Truly it sounds a bit weird, but when these planes can attract real players to fly into those airports, then one day atc might not need to generate bot planes to fill up the empty airport.