Flew another couple of missions. Still no contact however.
Taking a peek at the externals I counted 15 AI aircraft per side. All flights were widely spaced on the map and very far from the front line (30 mins into the mission). Game performance was again very slow due to the amount of aircraft.
Interestingly, all aircraft were flying at extreme height. Something in the region of 20,000ft.
I think the basics are well covered. The gui is easy to use and the system shows great promise.
User defined settings would be a great addition if at all possible in the future. The current version with all planes spawning at the start of a mission is a bit of a resource hog though. It's great to be flying around, knowing that there are plenty of other aircraft out there somewere (an innovation that has eluded the default campaign so far).
It would be a welcome feature if the mission had proximity-activated spawn points for most aircraft, rather than having random flights orbiting in distant areas behind the lines. Fly over grid such and such, and a trio of Spads appear nearby. That sort of thing.
Bloody jood job getting it this stage already. I'm looking forward to watching it progress.