So Krysk1 has just dumped a mass O' data into the fs2 world with no warning I'm aware of. Have not had a chance to take a look as to quality, but....... wow!
World Seaports: https://github.com/krzysk1/world_seaports
World Heliports: https://github.com/krzysk1/world_heliports
World Airports: https://github.com/krzysk1/world_airports
World (grass) Airfields: https://github.com/krzysk1/world_airfields
Could be a game-changer!