Everyone getting into a big circle and hugging it out, everyone who died in the entire series will come out of the wreckage and say 'hi guys, we're not really dead ' everyone will laugh and say 'YEAH!' and scene.
madara is about to finish the fight, everyones half dead, then izuna somehow comes back, beats madara to death and takes back his eyes, attains double "eternal mangekyo rinnegan" and seals the juubi inside himself.
Naruto takes out Madara. Kakashi kills Obito. Juubi is broken up into the original bijuu. Ninja villages are once again balanced. Tsunade dies and Naruto is made Hokage. He hooks up with Hinata. Kakashi becomes Jounin Commander. Sasuke and Sakura hook up then die off screen of the AIDS he caught from Orochimaru.
Open Naruto next generation.
Konohamaru Shikimaru Lee and Hinata are Jounin with their own disciples. Among them is Asumas kid.
I would want it to end with Madara and Obito being defeated, while Sasuke manages to escape somewhere. Then we get one more season about the more dirty work of the ninja-world wand the politics. It could be awesome if Naruto ended up joining Anbu.