I like the idea of multiplayer based game where you character has roleplaying skills that grows when get more experience and ofcourse all possible awards and promotions included, and the univorms and medals shows in players skin.
The idea could be aerodrome where there is fully detailled all barracks and hangars and mechanics and other squadron mates. There could be other human players in same squadron and there could chat. Your rank will tell how much you can choose to do. example hauptmann could design own missions and choose what players select to mission, also can select the new aircrafts in unit and also select new players to in squadron.
- Also there should be campaign that last from 1914 to 1918, succesfull missions tells who will won after all.
- Players could paint their own schemes.
- all historical realistic details as possible.
- You could choose and change squadrons. Example start in 2-seaters squad and got enought experience to fly fighters.
- Realistic damage model where all in the a/c is brakeble.
- Much trees and details in ground. Trains, ships...
- Realistic landscapes
- germans, austrian-hungary, italy, britain, france, belgium, us, russia
- The game team will be updated continally at least year.
- possible to modificate easily and the game team listen and might use
users graphics and other mods if those support the stability for game.
Thats it... who wants to do it

?
Paarma
And dont forget the games we have now... Example Over Flanders Fields mod for cfs3.