Now that he has two normal eyes again, I want to see what he can do. With two eyes now he has better vision than just 1 and with no sharingan he has more stamina and chakra.
Against madara? he can sit watch and die.
he wasn't able to do anything against 1 eyed madara when he had MS.
Well not directly fight Madara but he is going to help out in someway.
Kakashi is a master tactician,he will perfom well against Madara even without the Sharingan.