One of my greatest desires is to be able to use the many races released by Paizo in any campaign, and to save the time that I would lose designing NPC/Foes from all of these races, nothing better than a product from the Codex series.
Races Codex would be a wondrous book, with NPCs from the many different 0HD races in ARG, arranged just as the Monster Codex, with options, examples and encounters. Fortunately, there are indeed 20 races in the Advance Races Guide (core not included).
The book would be just as useful as the NPC and the Monster Codex, and I dare to say that I woul prefer it over the Villain Codex. ;)
What are your thoughts on a product like this? If it was ever released, what races would you like to see the most?