I can only assume since his eyes were transplanted that he has all of itachis gifts. He's going to help naruto but it won't be like he's helping naruto if you know what I mean. He will probably look at it as there's a bigger problem then him wanting to kill the village and what village would there be for him to destroy if this dead guy destroys it b4 him? And I feel like there's no other way to defeat madara. No1 can seal him as instantly as the sword. Madara is leagues above any1. He will lose by surprise. Just cause sasuke beats madara with a cheat weapon doesn't mean he's better than madara. Without the weapon sasuke is toast