Lost is a sci-fi soap opera.
Better than most sci-fi soap operas (space operas?). It seems like the common theme for these is to take a religious concept and bring it into material form. Like good and evil (Babylon-5's Vorlon and Shadow aliens) , fate and free will (LOST's time-travel), and human worth and redemption (Battlestar Galactica's Cylons)--all of these are theological questions that are pushed into material form for the story. The Stargate movie and series even more directly analogizes religion.
I would like to see a sci-fi soap opera take on the "If there is a good God, then why is there evil?" question. I'm not sure what device could be used for the story, but it would have to take on the utopia-distoptia dichotomy. I think Star Trek did a lot of harm with naively representing a relatively problem-free utopian society.