I was just thinking... what kind of questions about loss can you think of that you don't really need to have answered? Such as:
What did Jin's mother use the money that Sun gave her as hush money for?
When the Island was skipping through time, did Vincent's nose bleed, or did that just happen to humans?
Did Michael ever try to start a new romantic relationship with someone after his wife left him with Walt and before Flight 815?
Did Mr. Friendly ever play on the football team in High School?
Where did Dogan learn to speak such perfect Japanese?
If you breathed in the Smoke Monster, would you get cancer?
Will Nikki and Paolo return as ghosts and constantly annoy Hurley?