Bad idea. Not everyone that plays the game wants to fly Latewar hotrod planes (or against them for that matter). Forcing someone to fly in such an arena will drive them away from the game.
Myself personally, I prefer earlier-era equipment and smaller more personal crowds (read: less anonymity). I can always ignore the smack-talk and stupid things typed in the text buffer, but can't ignore the mega-hordes and unsportsmanlike behavior (clearing someone's 12, diving on a wingless con to try and steal the kill, do anything for the quick kill, etc.).