What do you wish Kishimoto would have done differently?

[February]

Actually Naruto might have something that he learned that he didnt show us readers yet.
Remember when Kakashi / Sakura / Naruto leave for the sand village to help find Gaara, Jiraya says to Naruto at the game "Don't use that power"

Is that power referring to Naruto's 4 tail release or does he have something he still hasn't shown us yet?

If Naruto didnt learn anything except more chakra, and more kyuubi tail release, then he is really the most worthless character ever

[Assertn]

Actually Naruto might have something that he learned that he didnt show us readers yet.
Remember when Kakashi / Sakura / Naruto leave for the sand village to help find Gaara, Jiraya says to Naruto at the game "Don't use that power"

Welcome to two years ago. xd

Alot of people are still suspicious, but be obvious that its in relation to the kyubi. The only reason I'd let it slide as something else was under the unanymous agreement that Jiraiya was saying "Don't use that jutsu," but I'm starting to lean more with DB's recent translation of "Don't use that power."

Lets see...
1) It's forbidden....ie. harmful to Naruto and/or other people
2) Jiraiya pre-emptively gives Kakashi those seal notes in the event that Naruto loses control.
3) Jiraiya explicitly describes the traumatic influence of the kyubi chakra from Naruto's training.

What else could it be?

[Idealistic]

If Naruto had some super powerful jutsu, then he could have used it to help Shikamaru fight against the 2 akatsuki guys (i forgot their names already) instead of training for Rasen-Shuriken which would never have happened had he already learn a powerful jutsu. Well, he can still learn it, but he'd probably learn it later on seeing as with the time he used to train, he could have been helping Shikamaru.