Yeah, but so do we have Hashirama, along with all other Hokages which I think they have the same effect of unlimited chakra (correct me). I think the direction will be determined if we see Obito and Kakashi getting into the mix because no doubt, Obito will be done with if he shows up now. Perhaps he will be upset or convinced once he sees Juubi going down. So yeah, this is hard to determine the direction because again, I have not yet see a theme last longer than one volume, but maybe this is it here. Maybe. I got no real clue. 5 chapters left to determine the direction.
Yeah. My worry with Madara is more about the fact that he has a Hashi clone (w/e that is) and the Rinnegan. So I guess the 4 hokages will have to find a way to take him down. I usually think that the Reaper Death seal would work, but I don't know. The point is, what I'm looking forward to is as to how Kishi will bring closure to these topics. Considering how many we have left, the manga could last at least one more year. However, as we can see, the pace of the manga has been suddenly increased, so we may see closure of various topics at the same time.
I hope that he brings the resolution of Sakura's feelings soon, though. ^_^