Actually, it shouldn't be that hard. The problem now was that nobody knew when the show would end, so the writers were in quite a pickle. They couldn't reveal too much, since if they told us that everyone on the island is in purgatory (example), what can they possibly write about for the next 5 seasons, if that's how long the show eventually ran for. Yet, on the other hand, this forced the writers to really string things along, which irritated Lost fans worldwide. At least now the writers have an actual timeline and can schedule what facts and hints and shockers to put into the show in certain weeks. I have a good feeling that the rest of the series will be going along at a much more consistant, steady pace than recently.
By the way, anybody catch that flash of Jacob in the chair? I missed it when it aired, but someone on another forum posted a screencap:
Some people are theorizing that it's Alvar Fonso, though I personally think that it's somebody who was on the shipwreck of the Black Rock. His clothes look very old fashioned, from the 1700s or 1800s, plus he has a short ponytail. But that's just me, and it's hard to tell anything from the flashback (everyone has tried lightning it and darkening it, but the Lost crew did a good job in hiding this guy, lol)
I don't think Locke is going to die (he's too much of a central figure, but then again, so were Shannon and Boone). It does look bad for him, though. Off in the middle of nowhere, he told Sawyer that he was going to go on "his own path" from now on, he's in a pit of corpses that nobody has come across yet. But on the other hand, the bite wound on Locke's hand healed really fast, and his broken back healed when they crashed on the island, so maybe his gunshot wound will heal by itself too. Hmmm, theories, theories!