User blog comment:RaymondLatu/What is the One Piece/@comment-4498721-20111221172153

Well Rio Poneglyph will be there for sure, maybe some big-ass tresure too. But the actual one piece will surely be something unexpected(at least for now).

It might be something that take away someone's DF powers, so Luffy would use it because his dream came true and he won't need his DF powers. Or it might be something taking away DF powers of every one on earth, thus ending the great age of piracy. Both might be buzz-kill endings but this way, the adventure would actually end.

IDK LOL :D