I don’t know if it’s possible but it would be really cool to have a possibility to build an airport from the very beginning to use your own creativity a bit more and have the options of changing your airport.
It could be the Haugland Airport where you start with just one main terminal building and e.g. 2 runways (4 would be even cooler) and loads of empty space. There should be designated areas for future terminals and stands (so that paths for taxiing are pre-defined) but the user should have the option to create terminals as they like. So you can create e.g. an all cargo airport or just an airport with S & M stands. If you’re tired of the way your airport works you can tear down one of your old terminals and build a new one for another category. Maybe it would be also possible to pimp your terminal. This can be for your own design purpose or to attract new airlines that demand certain features.
Since this might be a lot of work I don’t need it soon, but it would be cool to wait for it