Naruto will never kill Sasuke shown by him verbally saying so to Itachi that he;d protect Konoha and bring Sasuke back. Dont under estimate Sasuke he may be powerful enough to beat kakashi.
These statements were made quite a while ago, and an awful lot has changed since then. Obviously Itachi was well aware Sasuke would likely end up attempting to crush Konoha, and thus he spoke to Naruto, and because Naruto professed a desire to save Sasuke as well as Konoha, granted him the power to do so (and I agree, I am VERY interested to see what this is). Though I always got the feeling that Itachi half-doubted Naruto, perhaps feeling he was naive to think he could bring Sasuke back to Konoha and save it from him at the same time. What has really changed here I think is that Naruto no longer believes things can go back to the way they were. The key here is the shattering of the image of Team 7 during his conversation with Gaara. I think Naruto finally realized that the only way to save Sasuke may be to kill him - and Naruto is the only one who can save Sasuke (evidenced by how he has been able to save others throughout the series - Zabuza, Neji, Nagato...). For innumerable reasons, I believe, in the end, Sasuke will have to die, Naruto will have to kill him, and whether Sasuke is redeemed before that is up to him. As others have said...bringing Sasuke's dead body back to Konoha is technically a fulfilment of his promise...
I think Naruto needs another Nature affinity to counter sasuke, needs beter nine tails control, and new techniques.:naruto:
Sakura needs to let sasuke go (he nearly killed her..) :sakura:
Sasuke is out the picture (like no turning back 4 him he's done for..):sasuke:
Madara's moon eye plan is kind of in question now.
The ten-tailed Jubi may come back..
Naruto and Sasuke Will Have the most epic battle the series will ever see.
AND I NEED TO KNOW WHAT "POWER" OF ITACHI THAT HE GAVE NARUTO THAT HOPED HE'D NEVER HAVE TO USE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!:itachi:
I'm guessing by Nature affinity you mean the ability to use another type of jutsu other than wind jutsu? I agree that this ought to happen (and it will likely be water, based on the fact that wind is strong against lightning, weak against fire, and water is strong against fire and weak against lightning so he will be equally matched with Sasuke - also the fact that he is "Uzumaki" - whirlpool (water) and his father was a "Namikaze" - meaning "wave wind"), but I think Naruto needs to master wind chakra first. And definitely needs better kyuubi control...As for new techniques, I think Naruto still has some tricks up his sleeve...we definitely have not seen all the products of Naruto's training with Jiraiya - remember those cryptic reminders not to use "that jutsu"? He still has some surprises in store for us. (I have a secret hope that Naruto already knows/will learn the jutsu which gave the Fourth the name "Yellow Flash")
I agree about Sakura, and I think she has already begun to realize this and do so.
I disagree however that Sasuke is "out of the picture" and completely unredeemable...we have had several majorly evil dudes repent near the end of their lives and end up helping the good guys (Zabuza, Sasori, Nagato).These guys were more evil than Sasuke in many ways (Sasori for example had killed a Kazekage...), and yet, they were redeemed before their deaths. I feel Sasuke may have a similar end. The pattern thus far certainly seems to indicate that may be the case.
Why does this call Madara's moon-eye into question?
And yes...Naruto vs. Sasuke will be EPIC...Kakashi vs. Sasuke will be nifty too tho!!