Sharing random ideas is fun!
One Piece fan stuff here.
Chopper is considered, by the navy, at least, to be the weakest member of the crew. While Luffy's bounty has recently hit 1.5 billion, chopper's is only 100. Also worth noting, his Devil Fruit, the Human-Human fruit, has been rated the most worthless fruit of them all. Add that with his adorable nature and innocent personality, and his role as more of a doctor than a fighter, and he's fairly underrated for his abilities.
So here's my idea.
Keeping in mind that Chopper spent the two years gone developing his devil fruit capabilities,
And that Kaido is not human, at least to my knowledge.
What if. Chopper developed awakened devil fruit powers of the Human-Human fruit.
And turned Kaido into a human, making him unbelievably weaker than he is now?
It would be the perfect reason for chopper to get an actually reasonable bounty, and would give greater purpose and power to the Human-Human fruit.
I know an awakened Zoan Type would turn the eater into a mindless monster, but think about it. Pre-timeskip, that is what the Rumble Balls did to him.
And I feel like, since the fruits are directed towards mankind's use, one that has the power of man should definitely work differently.
After all, Zoan Types shouldn't be able to have more than three forms. Chopper has nine, ten if you count normal mode.