Ok, several things.
-The kid that appeared to Flocke was Jacob, perhaps being reborn and rapidly regenerating back into his older form? When he said to Flocke you cannot kill him, etc....He was referring to Sawyer (the candidates).
-Sawyer is important to Flocke as we saw when he was saving James from falling to his death. This in turn can screw Flocke over as Sawyer can have more control/influence is he is that important to Flocke.
-Sawyer is aware of what Richard told him. Sawyer will play it out for now, but he is not taking sides right now...regardless of his "hell yeah", he is a con-man after all.
-So we know the numbers are associated with our main characters who are candidates.....they are all candidates to take over Jacobs job or protecting the island. We know Flocke said that it's just an island, that coming from a 'man' who can turn into a pillar of smoke and take the form of others? And island that has cured cancer, cured paralysis, had immortal beings walk on it....this island is not just an island.
-The side reality....is this perhaps how their lives would have been if Jacob never touched those select few? Quite possibly yes, because we know that by Jacob touching them....it led to the path that we saw in Seasons 1-5. But if he didn't, then the side reality is what happens and the Island is under water.
-I think it is still unclear whom is good and whom is evil....is there a good or evil side in this conflict? What deems evil on this island? Maybe MIB's actions are evil but what his action will achieve is for the better, and Jacobs actions are for the better but with the ultimate outcome being evil. Or the other way around.
-The real John Locke is not finished yet. It seems as if the real John Locke is somewhere inside of Smokey's human form. Crazy or not, I could see John Locke somehow retaking his form back from Smokey. Either way John Locke will return, Darlton have said he is important to the story and I don't think a dead John Locke is the answer.
There's much more.