One thing I asked about years ago on your forum disappointingly has still not been implemented. This is a simple text lookup for ICAO codes on the New Flight page, which I don’t think would be difficult to implement once a database was set up. So by typing the name of the city or local airport name, you would be presented with matches showing all the details including country etc.
I have over 350 airports on my system and not surprisingly cannot remember all of them! Annoying to have to go elsewhere to look them up.