I remember a KOTH a long time ago when we flew Bf-110's. The CM had everybody shoot off all their rear ammo, though how he could be sure it was all gone, save for joining as a gunner, I don't know.
Anyway, I'm for it, mostly. Planes like D3A Vals and SBD's were used as fighters sometimes, and I've even read of Stukas getting into dogfights/vulches with their forward guns. On the other hand, having TBM's or Boston III's fight each other seems silly.
MRPLUTO