Me and my buddy had REAL Rc combat today, lol. I missed him by inches. It was a blast, we had a good laugh. Would of been pretty cool to slice through his wing :p
Its much harder than one might think, to have an "air 2 air" collision. Someone might say "the object is; not to have a collision" but what fun would that be?
There are a lot of variables to send & receive;
x, y, z, pitch, yaw, atitude, speed, PlayerNames/position, maybe a timer too, and chatting. Those are just the basics.
Then a central server would be needed, where the game lobby could be moderated & monitored for inappropriate behavior,(safe for the kids).
A host/client interface would need to be created.
As far as models go, these would either have to be downloaded before the start of the game, or a late joiner might be stuck with the default plane, like the "SU-26", until the next round starts.
Lets say it has a max of 8 players, where each player could create a bmp/avatar of himself, thats applied to a player position object in the game.
it would need only the player ground position view, no chase view, otherwise go play flight simulator.
Wow! sounds like a lot of work. all for what? just to fade away into cyberspace, like most multiplayer games. lol.
It would be cool though... but, most likely just a pipe dream.