Yes, I too would like to see HTC's art department stay busy by allowing the user to select different skins for each individual plane. As far as the different skins only being visible to the player; I would prefer the skins be visible to everyone, but limiting them to the player is an acceptable work-around - especially if it is a personalized skin.
Just to expand on this idea a little, I would like to see OD green bombers with the same group marking worked into the bomber formations so that not all three planes are exactly the same.