Sakura will be usefull in the final fight against Sasuke. When it comes down to the Summons. Because Tsunade will die but not before giving Sakura the slug summon ( forgot the name ). But for the time being I dont see her being very useful besides being Naruto's sidekick. She used to be the major powerhouse but seeing how Naruto can lift use statues in Sage mode....she currently isn't much.

I think Naruto's dream of becoming Hokage is drifting to the background. Because he wanted to do that so everyone would acknowledge him. The entire city does that now.