It would be great to have the option to start a Free Flight as a Player Character at a chosen airport location, such as near the terminal, instead of always starting directly next to the aircraft.
For example, we could start near the terminal, walk through the airport/along the apron to our aircraft, perform the pre-flight walkaround, and then enter the aircraft and begin the flight.
Even if starting inside the terminal is technically difficult, simply allowing us to spawn as a Player Character at a chosen location near the terminal would already be a great improvement for immersion.