I'd certainly be interested in seeing a channel like Discovery Wings (be it on TV or PC), but done properly.
Wings was great for the first couple of months, but as others have said, after that it turned to the same few military programmes that I had no interest in to begin with.
Personally I'd like to see a mixture of civil/general aviation.
'Sky Truckers' meets 'A Plane is Born'.
'Sky Truckers' was shown to a death on the Discovery Channel many years ago, it was a doc following a CargoLion crew as they carried out their day-to-day duties.
Another great one, aired to a death on National Geographic a few years ago, was the documentary about ATC in New York City, featuring LGA, JFK and EWR. They screened it about 10 times a week at the time, but sadly it hasn't been shown again for many years. Or at least I haven't seen it on.