So what happened with Daniel Faraday???
I bet he took the sub off the island to meet up with his mother to try and sort out the time travel stuff...to try to get everything back to normal.
Funny, I went to Lostpedia and found out something I missed
Apparently there was someone behind Sun at the Processing Centre
http://lostpedia.wikia.com/wiki/Image:509_sun_woman2.jpg
Despite the hair parted in the middle, I think that it is Claire. She's been showing up with Christian lately, seeing as they are both part of the same family. Theres something going on with Jacob and that lineage. Christian, Claire and Jack, and Aaron. I guess we'll find out!