Check out my smaller Tower Map.
http://www.dom3minions.com/maps.htm
It might do what you want. It forces everyone to have only one enemy on each side of them for most of the game.
The larger versions (altho I prefer the pipe version) are great for playing long solo games with lots of nations but avoiding much of the micro-management that giant maps create. It makes it easy to play into plate game with only a couple of small front-lines to have to managment. At least its a very different game.