1) Guaranteed to happen: Everyone will continue to express how much they value their families.
2) Probably will happen: Resources will grow more scarce, survivors will start to face starvation and diseases. Splinter groups will try to break away from the main group and this will cause conflicts.
3) Likely to happen: Mason will try to put his history knowledge to use by convincing the aliens to do things differently. He will fail and witness some great atrocity and will thereafter escape from captivity and become a true leader for the resistance. Possibly he will be rescued by his son or something other completely unbelievable.
4) Those kids that were harvested will continue to play various deus ex machina roles in the program to mix things up, both internal tension and external military manoeuvres. Diplomacy between aliens and humans will start, and then fluctuate and collapse.