Only a very small thing, but sometimes small things can make a big difference.
On the 2d map would it be possible in future to "mark" the Corps you have controll over, like for instance, a bold red border around the Corps Commander.......in a 3v2 MP game it is very easy to forget in the heat of battle which Corps you controll.
Even better would be if all the Corps were colour coded so you could see the different Corps Commanded by the different players. For example Corps 1,2,3,8 red, 4,5,10 yellow and 6,7,9 blue - borders around the Corps Commanders.