Board Thread:Theories and Speculation/@comment-25265296-20150801112522/@comment-26773508-20150801114727

Orochimaru has been developing better cloning technologies as of Gaiden, which Shin Sr. seems to have learned too, hence the Onion clones. Not all of them were perfect copies though. So the cloning process still has some room for improvement. It's quite possible that Orochimaru might perfect the cloning process and make non-sentient clones of himself with added modifications of his desires. Since the clones are of himself, the clone body probably won't eventually reject Oro, hence becoming fully compatible with Oro's true form. But he'll have to be very discreet about his plans if such dreams are to be realised.