Hi Tim
I just quickly scanned through all of the threads and have not downloaded the software (yet).
But regarding the conversation on whether to display or not display airways (and other things for that matter).
It might be useful to have a configuration file where most of these setting can be kept so that users can customize the software so that all of their default settings will be the same again when they login the next time.
Your screen-prints look great though and I will comment some more once I've had a chance to play with it.
Vabsie