Would Lost's final season have been more compelling if it had been like the final Harry Potter book? Just a random thought.
Both Harry Potter And The Half-Blood Prince and Lost's penultimate season end with the nice mentor figure being killed, and the monstrous villain in the ascendant. (Dumbledore in Potter, Jacob in Lost.) In both works, we suspect that there might be more to the situation than meets the eye, and the wise mentor seems to sacrifice himself on purpose. And in both cases, the death leaves the villain - who either can't be named or must not be named - free to persecute our heroes.
In The Deathly Hallows, we get a pretty good sense of what a world run by Voldemort would be like, and it's not pretty. Sure, the endless camping sequence drags on for a few hundred pages too long, but the way in which everybody goes from being in denial about Voldemort's resurrection to being in Voldemort's thrall is one of the great political allegories. And the oppressiveness of it all, with the statutes of humans being crushed by wizards and the paranoia of knowing the Death Eaters are everywhere, is more than enough to make you forgive the camping sequence and Caps-Lock Harry.
So how could Lost have been more like Potter? Maybe by making the Man In Black more unambiguously a villain earlier on. We finally learned on Tuesday, once and for all, that the M.I.B. is a Bad Man, who wants to kill the Candidates. What if we'd found that out a bit earlier?
More to the point, what if we'd understood exactly what the Smoke Monster would do to the outside world if he was able to go there - because we'd already seen him doing it to the Island? If we'd seen the Man In Black trashing the island, enslaving its people or generally turning the place into the Hell that he'd told Richard Alpert it was? Then we'd have known for sure that the Smoke Monster mustn't be allowed to go do the same thing to Los Angeles or anywhere else.
Instead, the Man In Black went on a charm offensive, and we got maybe a vague sense of unease from his companions, chiefly Sayid Plath and Squirrel Baby Claire.
Anyway, it's just a thought that I had in the shower. But given that Lost's final chapter and Harry Potter's started out the same way, maybe it's a bit of a shame that they didn't mirror each other a bit more.