Lost: You (still) want answers?

Tonight's "Lost" is the only repeat of the season ("Ab Aeterno," the Richard episode), so I figured I'd use the opportunity to re-ask a question from the start of the season: which mysteries will you be most disappointed if they aren't answered by season's end?

And to that I'd now add this: based on how this season has gone, and how some mysteries like the whispers have been explained, have your expectations for the final episodes changed?