To start off i can say that

Naruto had a lot of different training arcs and sensei’s haha

He ended up weaker after timeskip making the whole trip useless and a waste of time

Naruto didn’t improve at all in 3 years 😅 Jiraiya didn’t teach him well considering kakashi had to explain to him what chakra natures and kekkie genki are

Kishimoto gave a weak excuse saying that the audience won’t be able to relate if his training was not shown and he wanted them to see Naruto improve on screen. Dawg it was your idea. Should've thought about that before deciding to go with a timeskip.

Skill issue

I wish we actually saw him improve more. Sure he got better at taijutsu and made bigger rasengans, but that’s all I remember.