Plz make user changeable hairstyles for the Spitfire girl.
In my offline campaign the player will date the Spitfire girl once he manages to get an "ace" status.
They will drive the car together (so goggles are needed for the Spitfire girl) and authentic '40 style hairstyle with either blonde or brunette hair
That is, dynamical colour of hair must be implemented.
Edit: Seriously though, consider making female models for VVS pilots. AFAIK females were doing combat flight missions in WW2.