Kurama should take control and go bezerk.
I really think that if Naruto would of just let Kurama do his thing at the very start vs Tobi, that he could of handled Tobi and his paths so easily, and that obito would be long dead.
Kurama is a boss at brawling, vs Orchimaru, Pain. He knows how to brawl, naruto is predictable and talk no jutsu, however Kurama was shitting on Pain when Naruto couldn't beat him with Sage Mode, I am still not convinced that Charka Mode naruto could beat Pain, however im sure BM could.
I'm talking about if Naruto just let Kurama take over, and Kurama was at the time close enough with him that they could just do this with full trust.
but hey, i'm sure that using all of his powerful charka to shield the alliance and not beheading obito is the smart way to go.