Make a system like in real life where the passengers from a flight transits and switches planes while the plane they were on before, refuels and boards new passengers. For example, an airline flies to dubai, and the passenger switches plane to another codeshared airline. The plane from before then boards the next passenger and continues to fly somewhere else. A bit of a mix between stopping over and round trips. This feature doesn't seem to appear in this game as far as I see.
I'm currently needing for a livery and a logo that looks like from the 80's, the mother company is Aero, but I'm currently running only Aero Indonesia, planning Aero Kuwait (high demands around) and also would like to create Aero Alliance (server: Ra)