God, I hate characters who are like "I'm going to ominously hint at something that could be critical to your survival, but I'm not going to explain it to you."
Not only is it annoying, it's fucking stupid. If I was stuck on an island and ran into someone who was in the dark about certain things, if I gave the slightest fuck about that guy I would tell him everything I knew. You know, so that he could have a better chance to survive? I wouldn't just make mysterious, ominous statements and let him put the pieces together himself. But that's the new characters in Season 2 in a nutshell.