I would like to see squads be able to design their own skins for their aircraft.
The skins would have to be Historically based, but things such as Group and Squad markings could be customized along with a larger nose-art and squad colors for stripes, checks, chevrons, etc. could be used.
I like the current skin system, but it's still strange that I am sometimes shooting down the exact same plane (type and skin) as the one I am flying.