It would have been difficult to involve all of the Konoha kids equally. But there haven't been any information about them in the last chapters, that's right. I think it ought to be enough for a glimpse at the "future Konoha", though.
It is likely that his granddaughter could perform that technique, too. Maybe she will be the next Tsuchikage, I couldn't think of someone else. And the others /excluding Tsunade) will survive, I'm positive about that.^^
But there are only two (well, three, if you include Gaara) Jinchuuriki left, right? How could there be a Jinchuuriki as a Kage for each of the five nations?

1. I'm almost positive that the fight between Naruto and Sasuke (if it were to happen) will be like the fight between the 1st Hokage and Madara. Just think of how they both had their first grave fight at their statues. I think that's also when the details about the fight between the 1st and Madara will be revealed, as some kind of flashback or something like that.

2. I meant the one who resurrected Obito would be Nagato. ;D It was shown at the end of chapter 601. I didn't express myself properly.^^

3. Most of the ninja's would not be that pleased if that happened, I guess. They spent years developing new jutsus and from one moment to another, their work becomes useless. But that could also be Naruto's idea to bring "true peace" to the world. And it is obvious, that he is going to fulfill his master's wish and answer Nagato's question regarding that real form of peace.

I think Sakura was educated quite poorly, in general. All of the others nearly surpassed their masters and she is stuck at healing only. I think Tsunade could at least have taught her how to perform the Summoning or some advanced medical jutsu. It seems as if Sakura only knows the basic, which she is quite good at, though.
Maybe saving the Tsuchikage is just a waste of chakra. If this war doesn't kill him, it will be his old age soon.^^ At least the others will survive. I don't think that Kishimoto will let Gaara die after he only became Kazekage despite him being different than the others - even if it's just to prove the moral of the manga: With a strong will and good friends you can achieve almost everything. Plus, he already "died" once. And introducing new Kages as the next generation wouldn't be that spectacular, since we don't really know any of the other nation's ninjas. So there's no reason to replace the current Kages, either. But I am pessimistic about Tsunade surviving. That's just not possible.

1. And how would that "more epic" be, in your opinion? (;

2. Well, I wanted to say that Madara was the one who brought him back to life, but I checked again and that was Nagato. I have no idea, then.

3. I'd like to see how he'll do that. You'll right, he'll definitely try to get rid of the Bijuu for good, after all what he's been through. If that is even possible.

No, not because she'd take too long but because of her chakra. I don't think that she will have enough chakra left (especially after the battle with Madara) to heal herself first - she probably knows that and she seems eager to risk her life for that sake. I think Tsunade will open her seal again to use her last bit of chakra, and we all know what happened last time she did that. And because of her serious wounds, I don't think it is likely that she will wake up again.

Hm...
1. Was that really never mentioned before? If he died while fighting Madara, I don't think that Madara himself would speek so highly of him as the only one who could beat him. He could have died of old age, but that probably doesn't happen very often in the ninja world. <__<

2. You mean before the war started? I thought he was dead and resurrected by Kabuto, wasn't he?

3. The Juubi is not complete yet, so there is a chance that he might have a chance when fighting it. Plus, the Kyuubi is the second strongest of the Bijuu, right after the complete Juubi. And before the completion, its powers are not as immense as everybody thinks. But I have no idea what he would do to seal it. Is there even someone fit to be the Juubi's Junchuriki? Maybe he will seal it in himself, due to the high level of his own chakra. I don't know if that's even possible, though.