
Sorry for doing this on paint but it was the easiest way to show how it could work.

I was thinking that it could be like Circus Maximus where you can only attak upwards. And at the top you can attack down to the bottom (the Tsar attacking the people) and then the military in the middle, We will shoot you, can attack certain spots above and below (stopping riots).
Also each class would be a bonus with higher at the bottom and lower at the top. I think that with a good map maker this could be a very interesting map.