I loved all the questions it brought up about that! And especially regards Stinger and Kiza - what does it mean that a splice has a daughter on Earth, other than that he loves her? There are so many possibilities that the worlds allow. And I love that even though they clearly put thought into it, they didn't try to explain most of it, because they didn't need to.

(I think part of the reason I'm loving this so much is that it's so nice to get an SF movie fandom that's.. fresh. That isn't a sequel or remake or adaptation or reboot, that doesn't already have decades of related canon hanging off of it. Everything is questions left for us to answer for ourselves!)