I didn't see any threads about this. And the search bar really is broken or something.
Madara said that he'll take Obito's right eye if he died. He also showed that he's lacking a right eye. Then he goes and makes the statement that one needs both eyes [Sharingans] to awaken their full potential.
- What is this full potential he's referring to? Could it be Susanoo? Rinnegan? Mugen Tsukuyomi?
- Is he implying that Susanno is not exclusive to an Amaterasu/Tsukuyomi pair of sharingan?
I think Madara's implying that any two random sharingans can be used to "awaken" Susanoo when they're combined and MS is "unlocked".
p.s. I cant help but get the feeling that Obito's gonna give his other eye to Kakashi, after some talk-no-jutsu, so he can "awaken" this so called "full potential".