I posted this in general as part of a longer message..Posting it here. My Idea: If you had gone with the tower idea you simply need to do this. You make 5 different type of towers. A tribe must hold all different types to win. You must control 90% of the province where the towers are located to get credit for holding that tower. There will be 25 of these towers that will be on the map. 5 appear...then a month later 5 more and so on. ...now you have strategy and fighting etc. You must hold the province for 2 weeks above 90%. fall below that and timer resets.