You forgot about the rest of the surviving Akatsuki, there will probably be multiple betrayals, and there's probably more to the story than the Akatsuki and Orochimaru.Who else thinks that the manga is going to end soon? The fight betwwen Sasuke and Itachi will probaly
reveal the secrets about the Uchiha clan/the sharingan/Tobi=Madara. There aren't many bad guys left
except for Kabuto and Pain/Madara. I think the Sasuke fight will reveal secrets about Madara's plans.
Well currently there is:You forgot about the rest of the surviving Akatsuki, there will probably be multiple betrayals, and there's probably more to the story than the Akatsuki and Orochimaru.
We don't know how Orochimaru's power is split up. Sasyuke took some of his powers (regeneration, summoning mandra) when he wtfpwned him in his mind.Kabuto is going to be a huge threat as he's going to be the next orochimaru!
Even Sasuke said if Orochimaru was 100% he probably could not have defeated him. So I think Kabuto is going transform fully into Orochimaru and try to destroy Konoha I bet.
You know Naruto vs Pein is a given and Naruto will probably go all ape**** on him. Not sure on the Madara fight it could go either way.