I would 100% buy a SoG hardcover book. Maybe some difficulty advice or alternatives creature options for those that want a more deadly adventure would be nice.
If any AP deserves a sequel, it's SoG. It's a great story and I would love to have a better 11-20 AP than Ruby Phoenix, even though that's a great AP too, it just doesn't feel like the right tone for a post-SoG group.
