Ideas

1)Create a protagonist of a little used clan in the anime. (Aburame/Inukuza/Kaguya/Akimichi/Hatake/Sarutobi/Hozuki/Yuki...)

2)Focus in the development of a little explored village. (Kumo/Kiri/Iwa/Taki/Ame (The rain village I believe can be very well enjoyed))

3)Try to explore the time before the creation of the five great villages begins.

4)Another alternative to the village question would be to create your own village from scratch if your story takes place before the creation of the five great villages.

5)Instead of joining a village, create a mercenary organization.

6)Instead of joining a village, create a merchant organization.

7)Explore one more issue of economic interest in each country.

8)Explore better the horror of war and the interests behind it.

9)Explore better the romantic pair of the protagonist.

10)Develop the strength of the protagonist's friends so that they can best assist you during your journey.