I really thought that Madara is an amazing villain and was very well developed. He nearly planned everything und in my opinion, even if he is defeated by Naruto and Sasuke, he would still have been an amazing one. All the back-story about him and Hashirama, the way to use Obito as his follower to review himself was very clever and then finally to start the infinite Tsukiyomi and create his way of peace.
With this chapter everything has changed. Kagyua as the final boss, I really can't sympathize with this happening a lot, because we nearly know nothing about her, her back-story was a huge asspull from Kishi and her character is already too linear and straight, her actions and motivations are just boring like every other 0815 villain. An alien who wants to turn everybody into white Zetsus, so soldiers and take over the world, man what a boring shit.
That really destroyed all the yin / yang symbols and amazing thoughts about war, peace and happiness in the manga, Jiraiyas and Narutos dream that finally people are going to understand each other, the whole struggle Hashirama and Madara went through their life's with their clans, it destroys one of the most important parts of the story for me, it just feels like everything was a waste of time. If there is nothing going to change I am really done with the manga and I really thought I would never say this about Naruto.
But things are not finally set yet, because Madara got no flashback and maybe there is a way for him to come back or some way for the story to still loop up, to really get back to its roots, for me this change feels so rushed, just to end the manga fast, I really don't know what Kishi is thinking, I mean he put so much thoughts and ideas in his world and even made a big connection to the real one, of the problems it faced, it was something that made me thinking about and really made me thinking about the world. So let's see how everything moves on.