Anyway, it would be a lot less funny if Roy rewrote to some class from an obscure book. Part of OotS's appeal is that it is understandable to D&D players as a whole, and having a main character have his character class from an obscure source (honestly, I don't remember even what Warblade is from off the top of my head, much less what makes it different than a fighter), and have inevitable rules jokes from that would cut into the humor. That and it looks like being a single-classed plain-old Fighter is something Roy is proud of, and his ancestors are proud of.