Great Devblog guys 
However I also agree on that large aircraft can be used on domestic routes. I also understand that you guys are trying to make a game that is enjoyable for both; professional airport-fans and normal human beings who has no idea what an āairportā is 
However I personally donāt want this feature to be a one-way direction with no way to turn back or change like how it was on aircraft doors.
I had this feature down below. Maybe like how realistic destinations and weather statistics are made, a small volunteer team can work on a data for international routes or information. Later on this can be chosen on settings of new game difficulty like āUse realistic international feature Y/Nā. Without it game will be simple, with it game will be hardcored.
My last words; please donāt prevent large airplanes to be used on domestic routes 