Hi,
have a look on this
http://www.roogames.co.uk/Wings.html
u can command a squadron, choosing pilots for mission, and manage every single mission.
Simple graphic but i think it is quite a nice game, I thought several times on a game who can make u act not as a pilot but a s a squadron commander.
Pilots, if survive,gain exp and improve ability. Every pilot has different stats.
Demo available