She dying or Naruto will heavily injury Naruto and Hinata cant do anything, i do not want to sound like a fanfic but i think he will probably say i love you to sakura and swear that he would change the world.
Obito sees it and Naruto's determination, then he gets converted to the good side and uses rinne tensei no jutsu to ressurrect everyone minus the guys who didnt die on the battlefield.
Like, Tsunade(probably), Izuna, Shikaku.
Well, Obito is in fighting mode now since Killer Bee just attack, so he don't have time to look, but we'll see. I agree with you about the comrade situation. That's what the last chapter was about. Even the title is about connection. Naruto is linked to millions, so the point is that he shouldn't let it go to waste. You know, that idea could happen. Like Obito just gets mad and take his hate on Kakashi since he's the one that started the idea of no hope (fail to keep Rin alive). Naruto would look like he would go for the kill which might remind Obito of his reaction when he witness Rin's death. Of course, Naruto won't kill him but he will be extremely mad at him. This could be that talk. This is possible. I imagine that Obito can snap when he is truly desperate to prove a point, much like Light from Death Note at the end. After all, he said to Kakashi that his identity doesn't matter anymore.
One thing I won't like unless done properly is the revival. Perhaps Obito might explain the function and limitation of the jutsu, since it could be the last time we see it in action. Anyway, time will definitely tell. It's a long break. I say do stuff that you haven't complete yet. Also, I don't think doing that to Tsunade will do any help. She is split in half. So she only get revive to feel horrible pain. At best, being a handicap. We'll see