What is most intriguing is what exactly is Kabuto's aim...
We all know that Orochimaru's aim was immortality so that he could learn ALL possiible jutsus in the world...so his aim was basically knowledge...
Whereas Kabuto's primary reason for sticking with orochimaru was power...all he had ever wanted was orochimaru's power and techniques, which is why he often begged orochimaru to take over his body instead of Sasuke's and we all know it wasnt Kabuto's loyalty, it was his lust for power...
now that Oro is dead and Kabuto seems to cultivate a piece of Oro in his body, Kabuto should be satisfied but he still lusts for power...but for what exactly? Does he plan on defeating Madara or does he plan to take Sharingan/Rinnegan or Zetsu (he wanted Madara to give him a Zetsu, ALSO OROCHIMARU HAD BEEN CONDUCTING EXPERIMENTS ON THE FIRST'S CELLS, we know this was how Yamato was given mokuton)/Shodaime's cell culture (He did say he was interested in yamato)?? What does he plan to do with Yamato's body?