Re: Can any of the Rookies help in this fight?
Yeah, I think Shikamaru's shadow posession technique might help to momentarily stop Obito (though Obito's Kamui can transport him away without having to move any muscles). Ino's mind switch jutsu might be able to control Obito as well, but his body likely isn't going to be able to fight Madara too well.
Originally Posted by Pakura
Lee, Sai, Kiba and Neji are all basically worthless. None of them are going to have the taijutsu powers that the Raikage or Tsunade have, and both Raikage and Tsunade were defeated by Madara at the same time. As a group they may be able to be a short distraction, but they are fodder otherwise.
Sakura may be one of the best medica-lnin left on the battlefield if Tsunade really is dead. She can help to fix up Kakashi, Gai and (most importantly) Bee. Naruto, because of his healing powers, is basically immune from needing her help. The fox's ability to give out big chakra boosts may make the need for a medical-nin unimportant.
Hinata is worthless, except perhaps as a way to motivate Naruto (he gets stronger when he's protecting people he cares about, etc). Her Byakugan might be useful in tracking or analyzing Obito or Madara, but Neji's eyes are probably better anyway so she's double-worthless.
Choji can get big and strong, but we've already seen that his max strength is no match for the Gedo Mazo (which is now even more powerful and "complete"). Shino's chakra bugs get overloaded by huge amounts of chakra, and they don't get any huger than the Juubi. He'd be useful perhaps against Obito (getting one bug on Obito before he disappears or becomes intangible will allow the bug to stay on him, in theory) and perhaps in gathering battlefield intelligence, but that's it.
Overall, I'd say that the konoha 11 are going to serve no other purpose besides some emotional support and perhaps a temporary distraction. What we really want to see is Sasuke and his group come to the battlefield. Sasuke would be able to offer some real support, if he were in the mood to do it.