It would make more sense if he isn't involved in this battle at all but is saved for later at this point. Like come to find out he completely destroyed Konoha while everyone else was away fighting. Like yeah even killed Konohamaru or some shit.
But Veng, if he does that Naruto won't be able to forgive him using his powers of care bear magiks, and if he doesn't bring back Sasuke he will never feel worthy of Sakura's penis/vagina.
You don't want that do you ?
In other news why isn't Madara dropping asteroids on the battlefield right now ? The only 3 guys that can do anything about it are down for the count, he can kill everyone in one move while hiding in Dumbito's dimension.