Hmm. I just looked over 640 again. Sakura didn't get a single panel in the entire chapter. It would seem that Kish either thinks she has already had her shining moment or is saving it for later. In either case this is probably because he wants to focus on Naruto and Sasuke right now. Perhaps a NaruSaku-ObiRin comparison will be made soon and from that Sakura will start playing a more active role in the battle.
I personally dont think sakura is gonna get a shining moment and aftet that not appear. I feel likw kishimoto only meant that for the side characters, like shino, kiba, hinata and team 10 and team gai (although team gai and team 10 are significant side characters unlike team 8) I dont think kishimoto meant team 7 as well. Since they're the proraganists. What I think is that team 7 is always gettimg shining roles since they're the main cast. So with that said, im sure that sakura will be playing many roles in the future chapters as well as sasuke and naruto and all those MAIN characters.
I can see a big hug from Sakura, and a "I love you" coming from both lovers.
Hinata will probably assist this event and will realize that she isn't the one who takes the most place in Naruto's heart. Like the first hug scene, she will just smile.
What only matters to her is that Naruto's happinies. (like Naruto for Sakura)
I also can see an approval of Minato before leaving this world and go back where Kushina's waiting for him, so that he can tell her that their son founded happiness and that she really looks like her.
Anyway, I just can't wait until that moment. NaruSaku becoming canon for real. This will finally end this ridiculous pairing war for good.
PS : I wonder what Kishi will do about Sasuke and Karin?
He didn't made her an Uzumaki just for the fun. She has to play a important part in this story, and in Sasuke's developpement and futur.
Will Karin become a Konoha Ninja? Heh... can happen.
Im willing to bet hinata wont play a part. I mean she's over and dobe with, what else can she do? In my book, hinata is done with.