Not sure if I should reply here instead of creating a new topic...Here are some thoughts about improving of the book/library/temple systems (I'm not a native english speaker, and not really fluent, so there could be mistakes in text).
First of all, books should have more parameters. So, in a description of a book you should see (besides the information about prose/poetry):
1. Material and quality of it
2. Color, quality and starting material of an ink (or anything else)
3. Script, writing system and quality of handwriting, number of scribes and brief information about them
4. Number of illuminations, descriptions of them
5. Information about markup and the number of lines
This list means, that we need some new features
Writing systemEvery civilization that has conditions to creating a writing culture, should have a writing system. It could be logography, syllabary, abugida or alphabet (there could be more specific sorting). Or even some of them at the same time for different purposes. So, after the generation of a world there should be some writing sistems, and, more than that, writing traditions. Writing tradition should have a specific name and contain:
1. Writing system (the unique system with a specific name, for ex.: "The Iceletter, alphabet")
2. Direction of writing
3. Letter case for alphabets (the books could be written in majuscule, minuscule, cursive etc.)
4. Specific things like writing materials, dyes and inks
Writing systems could change over time through the other writing traditions' influences and random changes. Key-figures are scholars, priests and scribes. Every person (every scholar or scribe or priest) knows a writing system and a tradition. So they could change it by borrowing some features from different writing tradition, or adapting to the local conditions, or random changes. Such figures can invent new writing systems and writing traditions (like others can create artifacts, but rarely).
The same thing with the different illumination styles/traditions. There should be ornaments, pictures, initials in the manuscripts.
Temples, books, librariesThere should be strong connection between libraries and temples. Because of religions. Religions should contain different sacred texts, such as prophecies, prayers etc. So, if you have some, you need to write them down somewhere, right? Also, priests should have books for liturgical needs. For example, if religion A demands to perform prayers B and C every day and sacred text D once in a week, and also prayers and texts for every notable date in a year (such as Christianity), any priest of that religion should have a special book with that texts for successful performing.
So, we need also more detailed system of different texts in the game.
Also, what about historical books? Like annals and chronicles? They could have been working like Legends, but about specific time periods and civilizations/sites.
For example, you have a scribe in your fortress, and he/she/whoever writes down every notable event that takes place only in your fortress, or in your civilization, or in the world (of course, every KNOWN event).
And what about clay-tablets, wooden tablets filled with wax (
https://en.wikipedia.org/wiki/Novgorod_Codex) and other exotic writing materials?
Would like to describe more of my thoughts, but it's far more difficult in English.