>>283635766 (OP)
I'm actually working on a big long rewrite. Basically after the Nagato fight they don't ignore the fact that Naruto can learn stuff at multiplied speed thanks to shadow clones and they organize a whole big training project to prepare Naruto to fight whoever has the tailed beasts, Sasuke and Kabuto. Sakura develops special chakra pills that can regenerate his clones allowing him to make even more and for indefinite time as long as he has a supply chain.
So the premise is this, Naruto sends his clones on three missions simultanously. One goes with a witch that tells him how to release the hokage souls and enter the underworld through blood sacrifice. In the underworld he finds a shinigami blocking his path. He befriends the shinigami by pretending to be his cool buddy at one party to make him look cool in front of his friends that think the shinigami is a loser. Naruto fails by being a loser but it makes the shinigami look cool in comparison so he's happy. This allows him to enter the underworld and train in the Toad Ninja House with Jirayia, Minato and Nagato (They have to make Naruto strong enough to beat Hashirama to settle a bet Jirayia made).
The other missions are training in Konoha and raiding Orochimaru's bases for jutsu and research which are mostly in the background.
But the main body has the most important storyline which is travelling to a far away continent called the Vast Earth to find a legendary martial arts master to study martial arts but also explore the huge world that is out there, have a bunch of bizzarre adventures in this strange world and write it all down for Tsunade. He has to come back in a year though to deal with the threats to Konoha.
I have a solid amount of content and details planned although it's still very much WIP