User blog comment:Kaido King of the Beasts/Future Devil Fruits/@comment-5640399-20151018135629

Key-Key Fruit - Wanted to see this for ages, the user can create a 'lock' between any two objects with friction between them, or can 'unlock' any two object with friction between them, causing them to come unstuck a flow past each other. Two moves are Skeleton Key, Lock, which causes your bones to become locked in place so you can't move, and Skeleton Key, Unlock, which turns you into a bag of bones. Ultimate technique, 'unlocks' tectonic plates causing volcanic eruptions and earthquakes (bit too similar to Gura Gura no mi for my liking but, eh)

A paramecia which turns the user into a human tree hybrid (sort of like the monster transformation Hawkings' voodoo fruit has) which can use photosynthesis for increased strength in battle and also to promote muscle growth outside of battle, possibly regrow limbs too. Downside, flammable as all fuck.

Ash-Ash Fruit - Logia which turns the user to ash with an added bonus like Crocodile dehydration ability that allows the user to increase the combustablity of anything they touch.

For a Zoan, I want Kaido to have a fishman swordsman with a tiger-tiger fruit, just always wanted a fishman with a devil fruit and I think this would be an awesome fight for Zoro.