[CamouflagedKiwi]

It's been a long time now, but from what I remember, you're not wrong. It's often a mistake to try to explain too much in sequels, which they certainly do.

Also they seemed to have a weird obsession about who was going to have sex with who to minimise inbreeding in the next generation. Maybe I'm doing them a disservice by not remembering so well, but I recall that seeming pretty weirdly prominent.