Seeing all these great skins lately, there is much potential for great things. If i understand correctly TOD is basically going to be a simulated war, with real missions and the main objective being to survive and complete mission rather then gain kills.
Id like to see the ability for people to make their own skins, and use them for TOD, say your in JG-26 you could add the actual real squad markings for that squad on your aircraft but also have maybe a distinguishing mark, such as a decoration (like Erich Heartmanns black tulip design) or another design of some sort on the fuselodge.
Also itd be more realistic to have icons turnd off, so you have to actually get close and be sure of your target before you fire. Also kill number indicator, would it be possible to have something in the"historically" right place, that updates each time you get a kill, such as the germans putting their number of kills on the tail and rudder section. The kills would keep updating until the pilot was killed(not a bail out or capture but actually killed).
With the ability to do all of this, i think it would make the TOD part much more interesting and fun. There will be some really good battles and good pilots will start to build a name for themself by markings on their aircraft.
Example say your squad is escourting B-17s and your jumpd by 109s, you battle for awhile both trying to gain angles, when you look to check out you opponents aircraft you see a Red wolf, and his tail number reads 203, you know hes obviously pretty good at this so you decide to dive and get out of the fight before you end up dead.
When you get back you tell some of your buddys about the guy and they say, ooo yea thats blah blah he almost got me yesterday, good pilot!
I think having these abilitys would bring much more fun and overall joy if possible, and i dont think they would be to hard to do either. Just a thought:)