The tournament is over, and I'd like to share my opinion. The idea of symmetry, in my opinion, isn't very good, and I wouldn't call a map of this type a "duel map" for one reason: the side located in the underworld doesn't receive a bonus from its territory, while at the same time, Dungeon creatures receive a bonus underground regardless of the territory (in this map, Black and Red Dragons in the underworld receive a bonus in the utopia on snow underground). Maybe this doesn't matter on this map, but it's very critical on the "Me and My Shadow" map.
I suggest an idea for the next map: symmetry relative to the center.