You asked for predictions, and this is about the last chance (yay! yay! yay!) so here's my three (These are just predictions, so not spoilers, right?):
1) After reading/watching AstroJones' excellent article about the many faces of Dr. Marvin Candle/Mark Wickmund/Edgar Halliwax, and combining that with something I read in TV Guide about how we will be surprised at some of the relationships some of the Boat People have with the island, I have a prediction about the baby we hear crying at the beginning of the Candle video in The Barracks (Candle says something like "Can't you keep him quiet?" or similar...) I'm betting that baby was Miles Strom, son of CandleWickWax. Miles talked to Charlotte about coming back to the island to find her roots, and he seemed to be referring to her, but what if he was referring to himself? The age would be about right, I'm thinking...
2) Copycatting here (from DocArzt I think?) but I think it's really good so I'm on board... I think the quotes from last season "You're not supposed to raise him" (said to Jack) and "Don't you dare bring him back" (said to Kate) are not referring to Aaron, as TPTB may be trying to lead us to believe. I think those quotes are referring to Locke. ( As in... "You're not supposed to raise him (from the dead)"... and "Don't bring him back (to life, or to the island)..."
3) I got this also from watching the old Dharma Instructional videos triggered by AstroJones... Mrs. DeGroot looks an awful lot like a young Mrs. Hawking (from Desmond's flashback.) Now of course they're different actresses, but I was just struck by the resemblance, and it got me to wondering about Mrs. Hawking and whether or not she could be DeGroot... Hawking's going to be really big somehow this season, I think... I keep wondering back to who the "Adam and Eve" could possibly be... are they the DeGroots? Jack and Kate? Sawyer and Juliet, who both gave up their lives for their true loves Kate and Jack in some future twist? Arrrrrrghhh...
OK, that's it for me for now! Probably dead wrong, and you've probably heard these all before, but I thought the Miles one was original and I'm kinda proud of it. *buffs nails* LOL!