I'd like to know more about the political history, and previous wars of Yilakum. Particularly the Enki-Ylian war. Religious books would also be fun. One thing that PS is lacking are stories we can draw from. Almost all the books are formal, educational books. History is most often pieced together from written experiences, not necessarily the text books of the era. We look to shakespeare for insight into the 16th century, and the Canterbury Tales for insight into the 14th century. Even in fiction, we know more about the Lord of the Rings universe, because the Lord of the Rings is a story, not a timeline. Narratives give us far more of an insight into a culture than a book of facts ever will. Timelines, facts, and dates are certainly interesting, and very useful, but to know a culture, a history, a place, you have to live it. Narratives give us the one of the best tools we have to do so.