It was a pretty good chapter, I liked how Kishimoto kept the mystery of the "mysterious person", accompanied with Karin's statement, that was pretty good. I also liked the fact that Gaara arrived at the scene, but he can arrive before Madara? Hmm that's pretty fast. I don't know what he can do now with Madara there, but I want to see more action from him. By the way, did Black Zetsu just stole the other half of Kyuubi? Oh damn. The best part of the chapter was obviously the last page, Madara is here, he is here now!!
Now, as for what I disliked about the chapter, the Lee, Gai, Tenten felt unnecessary for me, I know that they're probably going to play a role later, but the forced comedy killed that scene for me. I also disliked the flashback of Minato, even more flashback, and it was placed so wrongly that I didn't feel anything from it to be honest. How can the other half of the kyuubi agree with everything so easily, like giving himself up to Naruto.
I chuckled at Madra spitting out the Rikudou's ninja tools, I feel as though it'll serve as a tool to seal Madara or weaken Madara or some sort, otherwise there will be no point to that scene. Oh and by the way, was Madara flying? o.O. All in all it was a pretty decent chapter.