[excaliber7388]

I thought someone mentioned this before.
The problem is: you'd need some good AI, because no one would be on the side of the axis.
One cool idea would be different campaigns for the different countries, and some different battles.
The problem with a lot of war games today is that they focus on the main character too much. But with an mmorpg, you could base it more on an army and how they have to work together.
Once more: good AI.