Kagami Uchiha - The curse of hatred through the Uchiha clan played a significant role in the story, it would've been nice to have a good backstory on one of the few Uchiha that didn't fall prey to it & what his motivations were.
Shisui Uchiha - same as Kagami
Tobirama Senju - Particularly during the war arc, he has been noted to be the best & profound water user around, but used little to no water techs during the war, just all FTG which should've been left to Minato as a character IMO.
More Senju clan members - I honestly feel there wasn't enough solidified Senju characters shown to counteract the amount Uchiha characters shown.
Sakumo Hatake - Was once quoted as one of the Leafs strongest that made the legendary sannin look pale, it would've been nice to see him with a lot more dialogue and action.
All I can think of for right, but there is way more, what's your list?
Shisui Uchiha - same as Kagami
Tobirama Senju - Particularly during the war arc, he has been noted to be the best & profound water user around, but used little to no water techs during the war, just all FTG which should've been left to Minato as a character IMO.
More Senju clan members - I honestly feel there wasn't enough solidified Senju characters shown to counteract the amount Uchiha characters shown.
Sakumo Hatake - Was once quoted as one of the Leafs strongest that made the legendary sannin look pale, it would've been nice to see him with a lot more dialogue and action.
All I can think of for right, but there is way more, what's your list?