I think we should use chief level. Then How? We will get 1 ability point per chief level. And we can use the ability point to upgrade troops and defensive building. For example.. need 1 ability point to upgrade Archery level 1 (archer damage +0.1%) and need 3 ability point to upgrade Archery level 2 (archer damage +0.15%) and need 7 ability point for level 3 and so on... So the all village will be different depend on the player's choice. And we can change the ability once a month (30 days cooldown). Well, I'm not very good in English. I think you'll get what I mean... thanks... :):):)

