Imagine if a non-Naruto fan watches this movie - ' Wow. this blonde kid and creepy eyes are really in deep love ! '
He then decides to give other Naruto movies a try.
He picks RtN and starts watching it. .Its safe to say that person will be left dumbfounded and speechless.
By then end of RtN, he'll be tearing his hair out.
That's the problem. It's a bit similar to watching that Digimon movie with Tai tried to contact Sora but computer system went berserk. It's like "How the hell did we jump to this?"
Let's face it, no matter how much you convinced yourself of Kishi's plan or whatever (that sounds like you're giving him a credit on writing), it still comes off low rant. I have repeatedly look back at the works and evidences and it's the same moments I get and never got a new one or found the missing link. It's the same thing. The problem is realistically, after Pain Arc, everything seems to go to a new direction. From Sasuke going psycho (though I don't mind that much) to suddenly now Sakura talks about him for herself rather than like last time, she was all about Naruto and Sasuke's bonds, to moon eye plan revealed, to many other things. It seems like we hit the new dimension, where things are about to go over the top than it needed to be.
Look, I said he's bad at writing not because of pairings, but since we're here to talk about it, I guess I should only address this aspect. The problem is obviously developing, it lacks good amount of it. In fact, it lacks so much, from what I heard, the movie only used 3 flashbacks, one in which is from the movie itself. That doesn't seem convincing and don't know why you can't include more. Maybe because there's not enough. In fact, if done by manga, it will be a page at most. Another problem is if the idea of accepting Naruto was the main point of this part 2, why do it. You did it in part 1, which is clear as day, so I call lies on this. Another problem is that if that's the case, why on earth did many put it like a couple from everywhere. I have seen from everywhere, including US with list of couples of SJ. It had the whole Natsu/Lucy exposure for years and years. Clearly, this was it. Hell, even anime studio was pushing it.
While I do respect people's opinion, I feel like we're trying the best to justify Kishi's writing as "fair". Going back to the thread of retcons and abandoned plots, you would know it's bigger than just pairings. That's the least of our problems. There were reasons why people quit this series or take far less serious. Oddly enough, from my experience, it happened greatly around Kage Summit Arc because the new display of our heroes (like Naruto being a wimp and begs on his knees). I can understand the human aspect, but the inner character said, "That doesn't seem like me." That's the problem. Hell, you can say the fact psycho Sasuke was abandoned too because he was going on as one, only to stop without showing it again. So what was the point? Not much really.
So I can't really give him the credit he deserve for thinking ahead because it's clear that he didn't. The way he does is have 10 plot path and only one is chosen, even if it doesn't connect. Just remember, there are such thing as bad writers or writing in a very controversial way. Otherwise, what's there to criticize?