Madara was nothing. He was strong, had cool hair (all that was before he became Juubi Jin and lost both, of course), and when you get right down to it, did nothing. He was manipulated at every step in his career, would have failed almost immediately without Black Zetsu. He is a complete hypocrite (Man seeks peace yet yearns for war) and gave rise to the worst argument of all time: Madara > Ur Fav. That's why BlackZetsuBase exists.
Also, Kaguya wasn't the villain. Black Zetsu was. The villain does the talking, the bad guy does the punching.