Sure, it was a fake Rinnegan, but it being fake was only stated to limit his capabilities, not add any. While Madara may be able to use Susano'o without eyes, he can still use it with the Rinnegan, and that is using "Sharingan powers with the Rinnegan". Of course, I already know he wouldn't be able to use something like Amaterasu or Kamui from his Rinnegan, as only Sasuke's can do that, but my original point was meant to be that he can switch between the eyes, not that his Rinnegan holds all the power of his Sharingan.I think the version of Madara you're talking about is edo Madara which is using a fake rinnegan. but I'm talking about an alive Madara with real rinnegan
It's true Madara used Susanoo ribcage after acquiring the rinnegan when Tobirama attacked him, but Madara can use susanoo without eyes at all its not related to the rinnegan and he probably can't use its perfect form without sharingan otherwise he would've used it against the tailed beasts. only Sasuke can use Sharingan abilities like Susanoo and amaterasu with the rinnegan and enhance them with its powers. like when he used a susanoo made from the rinnegan to block the IT light.. which made black zetsu impressed, Also the genjutsu Sasuke used against the tailed beasts was probably a Sharingan ability enhanced with the rinnegan.. which made Hagoromo impressed
Sorry but Sasuke is most likely using a special rinnegan not ordinary one