well the quest should be just like in Naruto from haku and zabuka all the way to Madara and some of the quest should have like a small cut scene and some of the quest npc's you fight should use there power-ups. For example you fight zabuza and you start to kill him he goes into a small cut scene (zabuza: I'm gonna show you why they call me demon of the mist..... *Zabuza pulls out his sword and uses mist jutsu*) and it gives them a boost. The quest NPC aren't strong but aren't weak to where you can take hits and not one hit kill them, so you can actually have fun with the quest. On a side note it would be cool for some clans to get through certain quest to be able to get some of there jutsu like for some uchiha's they have to either get sharingan by being lucky or fighting haku and beating him. Last there can be a slight chance like a 5% chance you get rare items swords clothing something etc. OH and there should be missing nin missions and village shinobi missions. Thanks for reading