The main challenge I could think of from a technical perspective, is save-game loading. If you discover a book, but want to load an earlier save, then your ongoing compiled process needs to retroactively determine which books you have in a previous file, which might pose a whole lot of new issues and bugs. There is an easy solution, perhaps an only solution, but that'd mean significantly longer loading times, and larger save-file sizes. Personally I'd think either of those two issues aren't worth the trade-off, at least not in Larian's recent games where there really aren't that many loading screens unless you're save-scumming, or play frequent but short play-sessions.
Exactly. But it may be a good idea to add some common knowledge about Faerun to loading screens. Like "Tyr is the God of Justice...". It may help people, who are totally new to DnD, get in touch with the world.
