This is a random idea I had on the main board for a means of allowing limited customization of aircraft. Basically, it would use decals to allow a simple means of players to customize an aircraft beyond just selecting a preexisting historical skin. Here's how it works:
The player would go to the Hangar, where they can click a "Customize" button. This brings up a new menu with several options:
1) Base Camouflage: This would be your basic skin, consisting of the camo patterns, stencils, and other universal details.
2) Roundel: Select your roundel variation. The available roundels would be determined by the base camo pattern.
3) Number Style: This would vary depending on the aircraft. IE P-51s could have options like the 8th Air Force squadron/aircraft codes, or you can use just a straight-up number.
4) Number: A text entry box to enter the number you want displayed.
5) Squadron Decal Location: Pick where you want the squadron badge, if applicable.
5a) Squadron Decal Upload
6) Personal Decal Location: Pick where you want your personal artwork displayed, if applicable.
6) Personal Decal Upload
So using the F4U-1A as an example, you'd see these options:
Base Camouflage
( ) USN Tricolor
( ) USN Dark Sea Blue
( ) Royal Navy
( ) RZNAF Tricolor
Roundel
( ) US Blue Surround
( ) US Red Surround
( ) Royal Navy
( ) RNZAF
Number Style
( ) US Navy
( ) USMC
( ) Royal Navy
( ) RNZAF
Number
[ Text ]
Squadron Decal Location
( ) Nose
( ) Forward Fuselage
( ) Tail
[ Upload ]
Personal Decal Location
( ) Nose
( ) Forward Fuselage
( ) Tail
[ Upload ]
Different aircraft could add different options. IE P-51s and P-47s could have radio buttons for Invasion Stripes (Full, Underside Only, None), or a color select for the anti-glare panels, etc.