Werewolves will make decisions differently. Instead of the human binary “on the one hand, on the other hand”, they default to four options. One per paw, obviously.
This is not an immediate thing. It’s a societal impact thing. Consider humans with prehensile tails: There would have always been a third option. What decisions would have been made differently? Would the word “Manichean” even exist? How much of our world view is based on upright, bilateral symmetry?
More relevant to something immediate: I’m adding plot to the first half of the book. It only seems fair to readers. Of course, it changes levels, which changes spreadsheets, which cascades up-chapter. Sigh.