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Madara's validity is a villain is over. Through Hagoromo, Masashi Kishimoto ended Madara's chances of being final villain. After he commandeered Obito's final villain role, he has done nothing, but try to obtain hype and validity [killing Sasuke/Naruto/Tobirama/Hashirama]. Now, Hagoromo stated that the power even above him is his mother, who isn't like him at all. He went on to deny that Indra [Madara] was in the wrong, and went on to say that the curse of hatred we have been forced to watch again and again is in actuality, Kaguya's will. This has simply killed his vibe as a villain, and him getting pummeled by Might Gai, Obito, Naruto, and Sasuke isn't helping him. Him seeing Kaguya and stating time for everything to become one has ended any chances of him being villain.
Kaguya is going to take over Madara. He has failed as a villain.