I honestly have been giving more thought to kaidou's position. What if he is a type of awakened zoan shapeshifter? That would also make sense considering he wants doffy to keep mass producing zoan abilities. The transfer of devil fruits seem to be really easy and cloning them thru mass production has yet to be revealed. Maybe it is easier to mass produce zoan fruits. I'm on the fence about that because why would it be easier to mass produce zoan level fruits instead of paramecia?