I believe the writers have aleady stated that they will not answer every little question about LOST in detail. Some things will just be left of to the viewer to decide, as it should be. We shouldn't need everything answered for us, in my opinion. That's why we have brains, so we can think for ourselves and develop our own conculsions.
The writers have stated that they will not readdress the Hatch or the numbers.
The writers stated they will answer the mystery of the smoke monster in the very last episode of Season 6. (Even though we pretty much know its a security system for the Temple)
However, the writers have fibbed in the past. They did say that there would be no time travel on LOST.......
Major K
"He guards the sleep of his pauper master as if he were a Prince." George Graham Vest
"We are alone, absolutely alone on this chance planet: and, amid all the forms of life that surround us, not one, excepting the dog, has made an alliance with us." - Maurice Maeterlinck