Immertag: Wakeghouls and circadian rhythms

This is for a setting I am working on for an Into the Odd campaign inspired by the fantastic Hideous Daylight by Brad Kerr.

Interested in the effects of a world where it is never night, I sketched the following rules based on some very surface-level research and following the structure of the Cairn scars table.

I would love some discussion and ideas on how to further refine this for interesting play.