I agree with one statement - give each village an individual trait - something that makes them stick out. Just an idea. E.g. Konoha: The Uzumaki Temple - A place that helps meditating and aspiring the will of fire to the people taught within it. Kiri: Seven Swordsmen of Kiri - An organisation consisting of some of the strongest nin within Kiri which are formidable kenjutsu users. Kumo, Iwa, Suna, Ame: Something else Just an idea. However, I like that idea. Thus, every village has something which aspirings people to join.