I like to see StarWolf having their own game (The StarWolf answer is too a game for the whole team, not only for one character), if not, then Falco is my #2 choice.
If anyone, I think Wolf O'Donnell and his team could get their own game. Otherwise, I can't see a game for any of the other characters... they don't have as much of a background, and such. But that's just me :P
Coming soon to the Nintendo WiiWare
Caiman the Survivor: Emergency Maneuvers
A puzzle/RTS game.
Every stage you start off in the middle of the field, and your goal is to reach safety. Using the new Wii Motion Plus, you can roll, somersault or boost/brake out of harm's way.
Since their lasers were always crap, you can only use it in limited fashion to stun certain ships.
While I admit, Star Wolf team seems the likelly canidate, I voted the original Star Fox team James, Peppy, and that porker Pigma Dengar.
It probilly wouldn't make a good "entire" game, but it would be cool if they made a Star Fox game with an unlockable game mode where you can play through those pre-SF64 events as that gang, and it could give more insight of the series, and give more insight on Pigma's betrayal, and such. (As long as they don't overcomplicate it.)