Skeptical of how "puzzle-solving" is supposed to work in an RP setting. Usually when I see this in games, it's either a race to see who can OOCly solve the puzzle first (regardless of if their character could or not), and doesn't really give much in the way of interesting play.

Also I feel like your rules about pregnancy are over-complicating things. The pregnancy goes into stasis? So they're just walking around with an un-growing fetus in their womb? I'm not saying you have to change this but it's so weird as an inclusion to me...