That resurrection jutsu must have a major weakness, even if one wasn't made immediately evident back when Oro used it. But it will surely have local impact wherever Orobuto is present. One way or another. Nobody would be foolish enough to trust a combination of Kabuto and Orochimaru, least of all Madara, and consequently we might never see straightforward action from him.

The next arc looks like a major sausage fest. Though I'm naturally glad Naruto decided to push forward.