My guess is that, instead of Nine Tails coming free, Naruto will gain the power to defeat Nine Tails, and will kill the demon inside of him, thus absorbing the 9 tails chakra as his own, and also neatly surpassing the Fourth. Naruto will then become the Sixth Hokage (Rokudaime-sama) and get his face carved on the monument.

Sasuke, however, (I hope) will realize in his quest for vengeance, all he's really doing is becoming his brother instead of becoming strong enough to defeat him, and his revenge will become empty even if he acheives it.

He'll then come back to Konoha and be another Kakashi character: lost everything he cares about, and hiding everything he feels behind a mask.