1. sasuke's wishy washy personality, kishi's lack of understanding/planning for this character till this very day -.-
2. not focusing on the ninja aspect of this narutoverse
- ranks like jounin become a joke when konohamaru saved his pervy special jounin teacher
- not exploring more of the naruverse, like other villages
- konoha ninjas not having elements, it's like they never trained at all, other than sasuke and naruto
3. uchihas like madara, itachi, sasuke, obito getting all the op powers. ordinary people like lee can do virtually nothing, as proven by guy in the war arc.
4. lack of planning in the war arc where the pacing is horrible. i could barely stand the beginning.. nobody cares about those metal samurai for instance. huge time waster.
I agree with you for with your second one entirely. I felt that we found out about all the rival villages, their history and their ninjas too late in Part II. I'd at least expect them to go into it a bit in Part 1 and they did with Suna/Kiri a bit but it wasn't enough imo. The lack of training was something that was literally irritating to me as well but not as much as the decrease in the ninja aspect.