Think about this for a second this is a dude who said "I don't know how to defeat Madara."
Every other topic everyone talks about?
Kekkei Genkai? Not really planned. He was originally going to make the Byakugan an offshoot of the Sharingan, but then decided to make it his own thing.
The Konoha 11? Not really much to them. Saw them as background characters and was going to kill most of them off before the time skip, but due to popular demand kept them on.
4th Hokage? I know he planned for a very long time that he was Naruto's father, but I don;t believe he was ever going to reveal that fact let alone have him in the story.
Every other idea in the story he has a "I didn't plan for it, it just happened that way."
But when it comes to NH and SS: the radicals want me to believe that "Yeah, it was all planned from the beginning. In fact, before I even thought of the concept of Naruto, NaruHina and SasuSaku was always my highest priority. All the bad writing? Totally planned to fool you since the very beginning."
He can't figure out how to defeat his the main villain within months of writing them, but he knows exactly how his so called "favorite pairing" is going to happen and construct an elaborate hoax to show how 15 years of writing was a misdirection? Man, talk about a massive conspiracy theory. It would be easier, and more believable, to say that NH and SS was a retcon because his editors demanded he change it.
I think Jugo's curse mode got reconed as a kekkei genkai, which granted I could actually see being a genic curse from his clan working to be honest, however it was done so poorly you don't really buy it.
Honestly I wish the three eyes remain sperated from each other as to how they got connected to each other was ridiculous. Like how to get the rinnegan by being reincarnations of the sages sons and having the DNA of both being the best example. Wished it just remained as being etheir a random, a descendent of the sages or even his direct reincarnation occurrence. I kinda thought the sharingan and byakugan connection would of later to have been revealed to propergander set up by the second hokage to undermine the uchia I'm order to keep them in check and such.
If I recall I think kishimoto wanted to do more mission arcs with team 7 to develop them slowly and at the same introduce some side characters , but his editors told him to some big tornment or exam arc which is what we ended up with. Granted I think we all loved the Chunin exams arc, but team 7 were not creamy ready for it namely sakura.
I think neji and chouji were originally suppose to die, but kept on like said and only chouji of the two had any real development in part 2. Does feel like that shino, chouji, neji & kiba were going to die in part 1, while hinata and maybe kankuro would die in part 2. Heck the only side characters I think he would of developed would of been gaara, shikamaru and rock Lee.
I think the 4th was meant for a prequel series instead we got boruto.
There is no way it was planned form the begging not when the bridge scene, the hug and road to ninja happened.
He could of just said "I originally wanted Narusaku to become a couple, but I changed my mind and decided on naruhina and sasusaku", instead he nope it was planned al along no matter how stupid it sounds