I couldn't find anything by searching, so I apologize if this has been asked. I'm currently in the process of writing a what I hope to be a rather epic fantasy novel, and I'm trying to create a living, breathing world for my characters to travel through. As such, I've designed a rather large world with many intricate details. I do not want a plethora of details to undermine my characters or story, but if I mention something interesting in passing that could perhaps be expanded upon, but such explanation is not appropriate for the story, would not a glossary be helpful and enriching overall? Any thoughts on this? Is this a bad path to head down?