About the power ups of course there gonna get power ups it's the final arc what u want them to be like in part 1 ?? Doing the same stuff ?? Plz. What events were obvious ?? Bringing the 4 hokages back ?? Tobi is obito ?? Bz stabing madara ?? Kaguya showing up ?? Every series has a romantic so plz don't start
The power-ups were ridiculous. The whole time in part 1 and even part 2 is looked like stuff ninja would do. Sasuke vs Deidara (which both people are really strong) weren't ridiculous but at some point during and slightly before the war arc, it became DBZ all of a sudden. That's just too big of a power boost and it took away from the whole theme of the story, which was suppose to be ninja's.
Also the big thing people liked about Naurto was that he was an underdog getting stronger and competing with the best trying to achieve his goals, but it got to a point where he was found out to be from a godly lineage and have everything go his way, which took away from the interesting point about him.
The obvious things were that Tobi wasn't Madara, was obviously Obito, and that Obito was following orders of Madara and the other Hokage's would appear. The Sage would appear, and the 10 tails would appear. All were obvious and was indicated earlier.
Also for romance, saying every series has romance is a lie. There are slight hints of it but a lot of them don't try to U-turn a series just to show it off. The whole series and even Kishi said this wasn't a romance manga and was just meant to show the story and all, not focus on pairings, which towards the end of Naruto he tried to implement into the story.