I'm not clear whether there's ten more episodes of Lost total, or ten plus the two hour series finale, but whatever the case, this is the year the series ends and most, though not all, questions are answered.
At the end of season five, which saw the Losties stranded via time travel back in time prior to their original crash on the island, Juliette (originally one of The Others) successfully set off a nuclear device which managed to forestall the release of electromagnetic energy which caused the crash. It worked, though they don't know it on the island, and they know even less in the "sideways time" where they now also live parallel lives, though evidently in the same dimension, each group completely unaware of the other, parallel existence.
In the fifth episode of this season, we saw something that was previously unrevealed, either to us the viewers or to the survivors. A huge lighthouse with the unusual function that it shows, from within mirrors high up inside the top, aspects of the viewers life. Or it did until Jack Shepherd smashed the mirrors in a fit of pique after one of them showed him a glimpse of his childhood home.
The fact that this lighthouse has presented itself would seem to suggest that, after Juliette exploded the bomb, the entirety of the island's inhabitants were doubtless whisked away from that time to another, and it would seem to be sometime in the past, when the lighthouse was yet present. Possibly before any of their births. On the other hand, they should have run into The Others by now, so maybe not. All we know is someone is coming to the island, and I for one wonder whether this might herald the first approach of The Black Rock, the ship that first brought The Others to the island sometime around 1850. If so, is this an opportunity to completely change the history of the Island? And what exactly is the Island?
I have long suspected the Island is itself a living, breathing, sentient, even conscious entity, with feelings and a will to live, and that Jacob and the Man In Black (now False John Locke) represent two sides of it's personality. One of them, Jacob, is coldly rational and logical, while the other, Jacob's nemesis, represents its more primal and emotional side. The latter wants to go home (wherever home is) while Jacob's motives remain for the most part unclear, aside from protecting the island, and keeping Smokey contained therein, perhaps eventually destroying him.
But what if the true goal is to integrate the two sides of the personality into a functional whole, something the more erratic, emotional, "smokey" side would tend to reject?
The island can move from place to place via its unusual electromagnetic qualities, and it has been strongly hinted that it is or contains the life force of an ancient Egyptian goddess, Tiawarat. However, the statue of the goddess might well have been erected by ancient inhabitants due to a misunderstanding of the island's nature, at a time when it held its position somewhere within the Red Sea area.
As for who will be the candidate to replace Jacob, my guess is it will eventually be either Sawyer, with Jack Shepherd eventually replacing Smokey, or it will be Hurley who will eventually reign supreme as the newly and finally integrated personality of the two. Or perhaps the island's power will somehow be dissipated and it will become-nothing but just another island. Who knows?
One thing I am fairly certain of, is Dogun is not dead. He was murdered by Sayid, yes, but remember, Sayid drowned him in the sacred pool of the Temple, and left him there. Assuming Dogun managed to purify the previously polluted waters, this should be sufficient to bring him back, after some time.
As for other things, such as the significance of Aaron, or the yet unborn child of Sun and Jin, the identity of the child who presented himself to False Locke and Sawyer, and other mysteries too numerous to mention, and many of which may well be left unresolved, we'll just have to wait and see.
