i say Kakashhi will break through to Obito explaining how Rin really died. Obito will team up with Kakashi and the others and using both sharringans (Kakashi+Obito) they could just defeat Madara of course with Sasuke Naruto Gai and the other Konoha 11 that are on their way....even Orochimaru if Sasuke doesn't kill hom again LMAO.