To this day, I have no idea what exactly has Naruto learned during those 3 years with Jiraiya (that would actually take 3 fucking years to learn), because as far as I'm aware, he returns to Konoha with the:
Fabled Basics, to which no one ever explains what the hell they mean by that, just that Naruto didn't have the basics, and now he supposedly has it (But he doesn't know what Chakra Nature is, doesn't know the apparently very obvious secret about Shadow Clone Jutsu, doesn't even seem to know anything about the other countries and villages, not even a minimal amount of Senjutsu knowledge/training, and isn't his ass forced back to school so that he can learn more shit before becoming a hokage anyways?)
Ability to dispel Genjutsu (Doesn't matter though because in canon, he always gets hit with the 1% of Genjutsu, and the filler doesn't care about it either)
Ability to use up to three tails worth of Kyuubi's chakra (Doesn't seem to matter because everytime he tries to use the Kyuubi's chakra, he just immediately explodes and goes to Four tails, and it's like, what even was the point of saying he could use up to three tails if never uses it?)
Inability to one-hand rasengan that shit, the entire point of the Rasengan was that it's supposed to be fast to make one with no fanfare like doing hand signs, why the hell did Naruto not improve his ability to make the Rasengan in three fucking years that he has been training?
I'm racking my brain trying to figure out what he could've learned/obtained during said 3 years.
Jiraiya's jutsu (there's really no reason why Jiraiya has not taught him that)
Wind Jutsu (There's no reason why Naruto doesn't know about his own Chakra nature, and to be honest, that shit should've been explored in Part I, why the hell would you not want your genin to know which jutsu they have affinities to?)
Maybe know about the Uzumaki and his own family, idk man, maybe Naruto's too cool to understand he has a family and shit, maybe we can have more scenes talking about how the Uzumaki are this and that, and then the one important Uzumaki has absolutely nothing to do with jack and shit.
I'm going crazy here, but Fuinjutsu, perhaps?
What do you guys think?