Hmm...here is my opinion(after a time jump to the future):

Sasuke's body is taken over by Oro and Naruto becomes the 6th hokage, setting up another Hokage level fight. Naruto and Sasuke/Oro clash in a massive battle that smashes forest to the ground. In the end, both are exhausted and they preform one last heroic charge. Sasuke deals a death blow to Naruto, and Naruto gives a stirring speech that awakens Sasuke's soul inside and allows him to drive out Oro...Oro's spirit explodes above their heads and Sasuke drops to his knees, tears in his eyes because he has killed his old, best friend. The other Konoha nins show up, Sakura, and Naruto's wife and child(Hinata[img]i/expressions/face-icon-small-smile.gif[/img]), as this is happening. They see the spirit of Oro driven out, and then Sasuke vows to repay the debts he owes for what he has done. Naruto then, with his dying breath, tells Sasuke that Sasuke must protect everyone now that Naruto is dying and names Sasuke the next hokage. Sasuke stares in disbelief and Naruto's eyes drift closed for the last time and we see an episode long flashback of the major moments in his entire life. Then back to the present, we have a flash forward episode where we see Sasuke marry Sakura, become hokage, and lead the village of Konoha into a golden age of prosperity because Naruto killed all their enemies and there is no one left to fight.



And before people say that Sasuke has to die for Oro to take over his body:
Oro took over the guys body and suddenly regained use of his arms. Since the Hokage's jutsu completely cut off Oro's spirit arms, that means that the arms can not be Oros. Therefor, the spirit arms must belong to the man that Oro took over. In which case, it is probable that the rest of the man's spirit is still inside his body, but completely subserviant to Oro's will and Oro is just controlling the other guy's arms in order to do his jutsu. Like the way Gamabunta used Naruto to transform and the way the Oro used Kabuto to summon the giant snake(can't remember its name).


That's just my idea of what could happen...for some reason it seems very anime-esque to me. [img]i/expressions/face-icon-small-smile.gif[/img]