Ok, this is a long shot and I'm sure many people have brought it up before, but what if there were WWII maps. Where the borders are the same as they were in 1945, planes could be re-skinned and could have a shorter range sense they aren't as advanced, nukes could be unavailable until very late in the game, there could be tons of new types of units. And why really stop at WWII? You could do WWI, the Roman Empire, the Revolutionary War, and tons of other scenarios! It would take a lot of time to re-skin everything and add new things to make the mode seem unique.
Anyway, that's my two cents on the matter, it will probably never happen though.
Anyway, that's my two cents on the matter, it will probably never happen though.