This is also a wish of many people in the main forums, as well:
I absolutely think it should be available, even if the AI system never automatically generates it in an airport. Let us working on the World Hub use them as a tool to make the world look more realistic.
Hi here0to0live940,
Thanks for the link. However, this is the devsupport forums for developers, and the request is specifically for the SDK team to give us native functionality so it could be made available to the World Hub.