well when i saw the first trailer you saw them fighting in town and such so fields like that schould become dlc to
i would like a flashback arc between the genin and the chuunin arc where you start of facing zabuza with his two assasins with kakashi naruto and sasuke *(in the hidden leaf forest) then the next mission in kakashi vs zabuza on the bridge with sakura as support, then haku vs sasuke with naruto as support and then haku vs kyuubi naruto ad there is the zabuza arc.
alsow for playable characters i would say*zabuza, haku, sound four , fourth hokage,*