I think there's something additional going on here...I think the first Hokage may have been able to access a state similar to Naruto's fox state. Think about it: the Sharingan is meant to represent the sage's eyes, so it would make sense that the children of that son would have the eye technique. But we've been assuming that the "body" of the sage was the wood release, and that may not be true. If you follow the parallels between Naruto and Sasuke and apply them to Madara and Hashirama, it would make sense that Hashirama could use a technique similar to Naruto's fox form.
And I doubt Sasuke will get the Rin'negan. Madara was a genius who obtained and used the EMS for a long time before he got the Rin'negan...Sasuke's had it for what? Ten minutes? I think Naruto and Sasuke will fight with what they have now, maybe Naruto will get the Tailed Beast Bomb.
And here's another thing: Everyone compares the relationship between Naruto and Sasuke to the relationship between Hashirama and Madara, but that won't work. Hashirama and Madara are both direct descendants of the two brothers, but Naruto is an Uzumaki, not a Senju, just like Nagato. They have no kekkei genkai of their own, and they wouldn't have the body of the sage either, because they are not the descendants. Naruto obtained this ability by learning to control the fox inside him, which means that he may still have his own surprise to look forward to, as far as Kishi goes.
Sasuke is piss.
Also, did anyone catch how Madara said "This must be his doing." And then later, Kabuto said "I am his assistant." Is there a parallel?
