That sounds like a good theory.
Thanks... My thinking is if Jacob represents good (and I think he does), he brought all the people to the island to do something good, whatever that is, maybe they have to come there to keep the balance of good/evil (thus the symbol of the balance scale). Anyway, man in black wants to kill everyone who Jacob brings there there, get out of having to do his part to "keep the balance" so he can be free. The lists that Ben was told to kidnap, I'm not sure they weren't working for MIB, even though he thought he was working for Jacob (remember he never actually saw Jacob). If you think about it, it was actually the MIB posing as Flock who told real Locke to bring everyone back to the island. Was the kid Jacob? Then who was taking over Sayid's body in the temple? Maybe Jacob resurrected as a kid, and Sayid did too at the same time. Lot's of Biblical allegory in Lost, but other religions too. Okay, my brain hurts now!