Me and my friends (who happen to be fans of the NARUTO manga) agreed on two things.
1.) There will be a part three.
(Since the strongest villain of the earth is Kaguya, enemies could come from the other galaxy)
2.) Sakura is going to get some bullsh** power-up.
Do you think this hypothetical Part 3 could last a while? As in years?
I figured if there was another time skip that it would only cover the final Naruto vs Sasuke arc. That maybe after the war Sasuke takes his group and goes his separate way for one reason or another and after some time he would meet Naruto again for the final fight.
If that was the case maybe "The Last" could be a movie that takes place in between that time skip. But then again, wasn't the movie promoted as a story that goes "beyond the original manga story" or something of similar words? If that's the case then there won't be a Part 3 since the manga would end it's story before the movie takes place. I really don't know, it's all just so confusing at the moment.
As for Sakura, yes, the moment Kakashi got a Perfect Susanoo I smelled Sakura's incoming power up from a mile away. As for how could she get stronger, well even I'm a little lost on that. Well, since Kakashi got a power up within Sasuke's spectrum of abilities then maybe Sakura gets one within Naruto's spectrum, maybe she could temporarily absorb some energy from the tailed beasts. She's good at chakra control so maybe she could handle it even if temporarily.