I think it's interesting that of the three candidates remaining: Jack, Hurley, and Sawyer, all three of them + Kate were the ones Michael had to bring to the dock. So, my question is, why were they chosen in the first place? Is it coincidence or is there something bigger going on? Could there be a parallel. Remember that Hurley was taken to deliver the message to the other Losties not to come after them. Jack was taken to perform surgery, and Sawyer and Kate were taken, presumably, to keep Jack in line. Do you think this has any bearing on what's going on now?
Maybe Hurley is being prepared as the mouthpiece (ala Richard) and Jack is getting prepared to be the new Jacob (doctor's touch = Jacob's touch). What does that mean for Kate and Sawyer?