Lost: Is Sayid the new Jacob?

"Any thoughts on why Sayid woke up?
Could it be like Fake John Locke and it is only Sayid's body possessed?" Matt T

"I think that at some point in time they are going to have to reconcile the two timelines, Dark Tower-style, or choose between one or the other. A third option is, of course, that the two timelines remain branched (I forget which story this idea originates from), but I don't think that is what is going to happen.

My first thought about Sayid is that he is the New Jacob. But now that you remind me that Ben was healed in the temple and imbued with a spark of the island's spirit, I'm questioning my first thought. I'm not completely ruling out that Sayid could be the New Jacob, but I am now considering that he could be the Anti-Ben." stardust

1. The water is losing its mojo at the same time that Jacob has been killed.

2. Richard said he's seen a lot of strange things on the island, but no one have never come back to life -- several people said Sayid is dead, capital D dead.

3. before he dies, Sayid remunerates his incomparable litany of sins for Hurley (the show's audience surrogate) -- speaks of the dark destination waiting for him, reminding us of his heavy karmic load. . .

4. Jacob sends letter to the leader of the others saying that Sayid is very, very important and can not be allowed to expire

5. long time later, Sayid is not dead -- not revived like Ben, saved from a fatal wound, but resurrected, back from the other side -- Richard, the island's historian, would tell us that this is a unique occurrence.

6. all of this happens at roughly the same time --

possibility: Jacob's presence gives the fountain of Youth its power, and as he dies, it's strength fades, but like a star going super-nova, there is one last burst of energy that resurrects Sayid, dude with a debt, got some work left to do

Is he the new Jacob -- what does that mean?
Does he have superpowers?
Is he immortal? Well, he already died, right? immune to death?
time will tell.