If he awakens what would hes awakened Numa Numa no mi do?
lets say he awakens before Blackbeard, whatever his awakened form does and look like will give us a clue on Blackbeards
this is because both of them cannot allow the attacks to phase through their body, instead they are absorbed - this is why COA is important is important for defeating a logia user, so it can actually hit them (i think)
caribous awakened form may be that the user can transform back to their normal form if they are confined in a space that their normal body cannot fit in, it may also give Caribou more offensive abilities than drowning. Lastly, his awakened fruit could possibly not allow to be left vulnerable from Jinbe or any1 who can manipulate water (im just guessing here tbh), his surface area could also increase as well as the time it takes to absorb sumth, he could also have a bigger storage space and absorb bigger structures - there could be more but thats all i can think off
now think back to blackbeards fruit - i think they are both kinda similar however the one main difference is that his fruit can absolutely nullify devil fruit powers
this is just a hypothesis so please tell me if im wrong anywhere - (i was bored)