Wasn't Sakura supposed to be genjutsu centered? She would've surpassed Tsunade if she was but instead she was a barely lived up to being Tsunade copy.
Anyway: 1) Sasuke/Uchiha centric even though it's called "Naruto" for a reason
2) Hinata. God i thought she was supposed to rebuild her clan and get rid of the two branches/caged bird cursed seal for Neji's sake. Plus let's not forget how she pretty much takes over after Naruhina was confirmed
3) Everything after Pein's arc. Kaguya was an asspull.
4) ALL THE PLOTHOLES EVERYWHERE. We seriously have more plotholes than answers.
5) I wish we could've learned more about Kiba, Shino, Lee, and Tenten. And more of Choji although we got more backstory from him than the others. Like are Lee and Tenten orphans or....? Why do Kiba and Shino always have to be ignored?
and most importantly
6) Barely any character development