User blog comment:SaintCoke/The Eight Great Mysteries of One Piece/@comment-3181121-20101110125355

I think One Piece is connected to the Will of the D. somehow but it won't be revealed until we get to Raftel, so I don't want to make any silly predictions. The Void Century, the Superweapons and the Will of the D. are also connected imo, maybe through a World War, that, let's just call it D.country lost and the WG want to ban the memory of them, because the WG were the villains?
 * 1) 5 Although I don't really have anything to support that claim I believe that we will see Sabo again, but it won't be a happy reunion.
 * 2) 6 No idea...will be interesting to find out.
 * 3) 7 If it's not due to some strange ability from his Yami-Yami no Mi, then I don't know, although I have read somewhere (on the rumours page?) that maybe BB has a parasitic twin, sounds unlikely though...
 * 4) 8 We will probably find out the identity of Luffy's mom when the SH meet up with Dragon somewhere in the New World. My current theory is that she's dead and that somehow inspired Dragon to start the revolution.