Hmm..I now think Naruto and Sasuke will fight...it will end in a draw. And they both pass out or something.
Then Kakashi shows up. He wishes for Sasuke to come back from the dark side..but he realizes that he won't be able to teach Sasuke back in Konoha because Sasuke can't be trusted anymore.
So he takes Sasuke and they both become wandering ninjas.
And the next saga is where the Fifth assigns Naruto, Jirayia and perhaps someone else(I was thinking of Sakura, but that makes me shudder) to go after Kakashi and Sasuke.
This would be a long saga filled with a bunch of little mini sagas that they overcome in there journey that will take them all over Ninja World. (Throw in a couple encounters with Atasuki as well)

Still, a timejump isn't a bad thoery either..