Hey, thanks for the feedback! Yes, the texture thing is something I was debating and ultimately didn't have time to integrate. The photograph of the moon on the cover has a lovely texture to it that is ultimately what I'd probably apply to the rest.
That is an excellent point regarding the final puzzle that I'd not really considered! My writing this time was definitely focused on vibes rather than traditional adventure design, so now that's something I can go back in and tighten up.