I know this will sound equally cheesy, but I think there should be a prequel following Judith and Neil. Seriously, I'd like to know a lot of things, like how they discovered that they were immortal, that their wounds healed, that they had mental projection, etc. Plus, when they were asked about the others who also took part in the group study, they seemed rather suspicious (maybe they killed some of them while the others just didn't take?). Plus, more Tiffany Limos. Can't go wrong with that.
But this one's eatting my popcorn!