Well this is a theory I made up while I was thinking about what dream would a priest have if the Strawhats should ever really get one and I´m curious if anyone thinks that this would fit with the story or not.
I was thinking that a good dream for a priest would be to find a "cure" against Devil Fruit powers. Don´t know what that cure would be but that´s not important. The thing is, the most Devil Fruit users in the OP world are bad guys which means that they use their powers to hurt other (mostly innocent) people. Therefore it could be a possible aim to find a cure with which he can take the DF powers of all the bad guys away permanentally.
Well I´m just curious if such an aim sounds to whack or if it actually would fit with the story as we know it so far. After all the mystery of the Devil Fruits hasn´t been revealed so far as much as mystic elements (like Ghost Ships etc.) haven´t been included so far so I thought it might be a possibility that could appear in the story. However I´m biased on that theory that´s why I´d like to hear other opinions.
PS: Very whack theory, but if a finding a cure for Devil Fruits were an element in the story then I think Oda could pull a beautiful ending where Luffy as the new Pirate King doesn´t have his DF powers anymore and before he gets executed his last wish would be to have a swim. I would find it a very beautiful ending. <3