I don't know if we're getting campaign DLC, but it would be nice if there were campaigns where you don't play as the Allies.
They make good points in the game that there was no one side responsible for the war, and every nation involved did things that weren't good.
Yet you never play as the Germans, Austrians or Ottomans outside of multiplayer. That's worse than not including the French and Russians, I think.
There's also no coverage of the war in the Pacific, Asia, or Africa. Nor any naval warfare.
It's all centered around Europe and the Middle East, and it's only Land and Air.