@innomen
I made a variant of Dirt-Dan's Pacific map (with permission). It has been modified to work well with AI, fixing a number of pathing issues. It is an adaptive 16 player map, and can be played as a regular map with no AI. SE Asia is the resource capital of the map, but difficult to defend. China and the US both have fewer resources, but much more defendable. At 40km, it does play a bit long. I might make a 20 km version for playability speed.
There are also a variety of Europe and World maps in the vault. Though anything over 40km, the board game Risk might actually be faster. If only there was a DefCon mod for Supreme Commander! Would make that 80km world domination map playable.
