Things I want to see in future chapters:
- Minato giving the other half of Kurama's chakra to Naruto, his bijuu mode becoming way larger (Kurama's full size was never really determined I think, if you compare the size of his head to Madara's in chapter 620 then in chapter 626, you'll be able to notice the difference)
- Sasuke/Kakashi dies in battle and gives his eye(s) to Naruto, who then unlocks the Rinnegan
- Hashirama's Shinsuusenju holds off the Juubi
- Tobirama's full power
- Minato showes us something other than the Rasengan and the Hiraishin (I mean, he's the Hokage, he's got to be able to do more than that and Fuuinjutsu right?)
- SOMEONE opening the Eight gate
- Naruto using sage mode and bijuu mode simultaneously
- Shinra Tensei being used at a much larger scale than Nagato (by Madara or Naruto)
- More Rinnegan awesomeness
- Rikudou Sennin's life and his fight against the Juubi
- Karin and Naruto bonding time (somehow)
- A combination between the Rasenshuriken, the Planetary Rasengan and the Bijuudama
- Hinata dying permanently
That's pretty much all.
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About Karin, I think forgiving people who almost kill you is an Uzumaki trait, just look at Naruto!
Besides, it's not like Sasuke did much, if someone almost killed me, as long as I made full recovery and the guy did not enjoy doing it I'll be fine, won't really care.