Not sure, there are a lot of theories about Sasukes new powers like:
-and so on
Sasuke IS pretty powerful right now even without "new" powers, only think he was lacking of is his sight what is fixed now. Anyway some op'ed jutsus would be great since Naruto is "omfgwtfisgoingonarethathaxO___O -like" with his new charka source. I agree that Sasu will love his new skills but somewhen somthing will probably happen that he cannot control it anymore and everything gets out of control (--->Darkness)
Sasuke's head shall roll.
He deserves the most painfull death imaginable.
After wich he wil lbe decapitated in public, where everyone will cheer when his head hits the floor.
All leftovers of him shal lbe a public toilet.
I don't know... Kishi never said sasuke vs naruto will be the last fight however, he did say Madara is not the last villian. Which could lead me to think possible villians could be Kabutomaru or Orichamaru or Sasuke.
I got so annoyed when she tried to kill Sasuke and FAILED, who attacks someone stronger and hesitates?! It's plain stupid and made her even more of a burden! She would be more useful in a wheelchair or dead. >.<