Do you mean the spirit of merry? Maybe Oda is crazy (compliment) enough to do it Mmh, I don't think so... The Klabautermann was referred as the spirit of the ship ITSELF, not the spirit of someone dear to the ship's owner who passed on... Also, it should be noted that, if Sabo has really become a Klabautermann, he might as well have chosen to protect Ace's ship (or Whitebeard's, consequently).