what if tobi all along planned on getting his sharingan back! half the plot was getting the gedo mazou the other half is getting the sharingan back, and if so i would like to see Kakashi get his hands on sasuke's old eyes, that way Kakashi gets an upgrade, tobi gets his upgrade, possibly unlock rinnegan on them, and Madara vs Naruto and Kakashi vs Sasuke which then leaves guy vs tobi. in the end its gonna be"

Naruto> madara
Sasuke=Kakashi
Gai> tobi
Naruto sasuke

sasuke and Naruto back to friends without ever duking it out cuz kishi is funny like that!
he saved their battle on a 3hour long anime movie thats titled Naruto Vs sasuke going at to the death for Sakura's forehead! lol