This is MY ONLY HOPE for madara
I believe this was kabutomaru plan all alone this is what he meant by he wont stop edo tensei(madara) so he was just waiting for madara to use this so that madara can become real again but because he doesnt know alot about his jutsus and stuff he had to wait.
Now that madara is real but with a immortal body and infinite chakra isnt this the perfect body for orochimaru like wouldnt kabuto put some of orochimaru dna on madara waiting for this to happen because what the hell happen to that oro-chakra that was eating kabuto inner self to become oro again?
And i find it perfect so that orochimaru can finally match naruto,sasuke and tobi but at the end he will still lose