Personally i like this game. It has a lot of potential, but yes, it's a long way to go. Uno, give those poor little people textures, some armor, a face at least. Secundo, you can't win a war by throwing stones at people with sticks :P. An upgrade screen perhaps? Think about it this way: you capture an armory of some kind, and from the money you get from capturing other stuff you buy better weapons and armor for your army or yourself. Three, It just feels weird and a little bit casual to have a person pop out of thin air when you destroy ten trees. Four, I have another idea: you start with (for example) two people. One of them dies. The next time you start a level you only have 1 person. This would make the game a little bit less linear and harder. Before i go i have to report a bug: enemies sometimes go inside locked cages.
I think that's it. Keep up the good work.