1.) The new power Sasuke was referring to was MS I think, but right after he says that he realizes that his eye sight has deteriorated already. He clutched his left eye, which is the Ameratsu eye, right? He better figure out his own way or get Itachi's eyes immediately. If they are around, I bet Madara may use them as leverage to control Sasuke.
2.) The Hyuuga problem was the execution of Neji's father for killing another countries ninja that tried to kidnap Hinata to study the Byakugan. The other country demanded his death in exchange, and Konoha wanted peace so the delivered. Of course the Raikage doesn't know that it wasn't the leader of the Hyuuga but his twin from the lesser family.
Killing someone within your village is apparently easy; however, trying to track a missing ninja isn't, so the Raikage is kind of dumb and over reacts. It's his brother, so his emotions are clouding him.
3.) I wonder if Naruto was having some trouble concentrating because of reading the book since he was crying as he read it. I hope that while Pa frog is training Naruto, Ma frog has incinerated Naruto's old uniform and any material that could construct a similar one. Pa frog will tell him that is the final stage of his training, not having a crappy uniform.
4.) For the Kage summit, I hope Madara and Pein show up in their Akatsuki robes. Then the others are like WTF! I don't think we have seen the fifth Kage yet. There's Gaara, Tsunade, Madara, Pein, and someone else I don't know of.
5.) Finally, the big breasted cloud ninja looked like a ****. She's a freaking ninja not some prostitute. At least Tsunade still acts like a shinobi.