Accepting map submissions.

Sometimes I go with friends to their place, and we enjoy playing Heroes 5, but playing the same map is getting a bit boring (even on heroic difficulty, the opponents aren't very strong – we've memorized all their movements and know exactly whether they will attack or not). So, here's a request: Please create a map in the shape of a "cross" (on land, this would be 4 islands of equal size, and in the center, one with an entrance to a dungeon. In the dungeon, it would be the opposite: one large, cross-shaped landmass with a sea in the four corners). I think this will be difficult because I've already tried to create it in the map editor. After all the struggles, it told me that it won't open it anymore). This map would be for 4v4 battles. I would be very grateful.