Wow, that's vast. With that kind of map; Canada(British Empire Vassal), Cuba(under Spain), and Mexico(Under
French Invasion) would be in - they would not be playable, of course, since this is an American Civil War mod. However, would they be real In-game Factions that can influence and be influenced, contacted diplomatically, waged war by US/CSA Players? or just empty Impassable Terrain with Foreign Port that can be traded with?
Also, European Powers can join the war, Unlike FoTS Foreign Powers? Will peace actually negotiable with them, if war actually breaks, since they cannot be taken out militarily. Also, how would they bring their Army? via a script? and how can they train troops and ferry them without making Europe invadable by the player?