I think that the series may be coming to a closing. Kabuto won't take nearly as long as Pain to finish. Madara (or whoever Tobi truly is) will probably be the last long fight and he probably won't take as long as the Pain fight because once they find him he doesn't have other bodies so it's not like they'll be on a search for the real him meanwhile.
And besides that, everything and everyone is coming together. I personally predict that near the end Nagato will tell Naruto who the true leader of Akatsuki is, and once Naruto & possibly friends go out to find him they'll run into Sasuke. Followed by emotional speeches (courtisy of Naruto and Sakura) and blah blah blah.
And afterwards there will be a short Kabuto wanting to kill Sasuke interupption. A possible teamup between the two parties during that. Afterwards the long Madara thing, during which I can see it only fit that someone will die. And after that. I think that either the series will end... or another timeskip =/. But as I said, everything's coming together.
And once/if Naruhina happens, well, the series will be weird then ya know. I mean, even though many want it to happen and it does seem to fit, think about it. Idk, it just seems weird if Naruto marries Hinata or something. The story could possibly get a little too peaceful then.
Now the guy above me said something about Sasuke attacking Konoha, well this could be possible but since Akatsuki is an organization, there is a chance that Sasuke already knows that Pain went out to attack. And there are the things going around that Sasuke is just putting on an act to fool Tobi.