I just thought of something. From what I understand, the Gedo Mazo is still inside Obito and the Tailed Beasts are outside, now separated. The Shinjuu is still there (I think). So how can Madara become the Juubi Jinchuuriki? The Juubi is basically divided into the Shinjuu, the Gedo Mazo and the Tailed Beasts. He'd have to absorb them all. We already dealt with one Juubi Jinchuriki. I know Madara will probably be in another level, but I think it would be repetitive to see another Jinchuuriki.Besides, the tailed beasts have come together, all of them. I don't think they were all brought back just to have them reabsorbed again. No, I think something different is going to happen. I believe Madara isn't aiming at the Infinite Tsukuyomi. If he was, there was no real point in trying to do it by himself when Obito could've done it...At this point, we don't know what's going to happen with regards to Madara, but I think he probably won't end up as the Juubi Jinchuuriki. Maybe Kishimoto will exercise his creativity again?