Stonehouse, you totally nailed it !
Airports should be international connections with the outside world; same goes with ports.
Though we should have access to the smaller, short distance boats (feryboats, water taxis and such) and maybe helicopters, but not to the very large passanger liners/aircraft. Those should be handled by the game, and just be there for eye candy.
Eh…. wishthinking…… We’ll se what the devs have in mind.