it makes sense what you said about being a certain kind of fruit. Last i heard Jimbei told the straw hats that Blackbeard pirates were hunting down devil fruit users. My belief and piggy backing on what you said is that if they kill someone who already has a devil fruit they know what his kind if.. whether being Paramecia. logia. zoan, whatever. that way they dont mistake that others make by eating two of the same kind.Yeah I've been wondering that myself......I'm wondering if it is only possible to have one of each type of fruit! Blackbeard has one Paramecia and one Logia!
So Maybee that is the exception when eating devil fruits. The problem about trying to get multiple ones is that you don't know which fruit is which!!! Since most fruits are Paramecia, then Zoan (Logia being very rare), it makes sense most people die because they get a second Paramecia!
Until something like that actually happens....I'm guessing that it either is taken away or, eaten by another straw hat, or is given to Ussop's Kabuto!
EDIT: Forgot about Blackbeard being called as unique in body.....Maybee only Will of D people csn do so....I'm curious to see what happens
what do you think?