Maybe Hurley could be a potential leader of the others. He can see Jacob which Ben and Locke can, He obviously has a connection to the island as in the outside world he speaks to and sees many of the people who died on the island, he was on the list in the season 2 finale (even though Klugh said that he needed to be there to take a message back to the rest of the survivors from the others, why did it have to be him?) Also the giant bird called his name twice. Also, has anyone else noticed that his curse seems to dissapear when he is on the island? Just like Locke's curse of being paralysed dissapears. Maybe Hurley is destined to be on the island, just as Locke is.