How long did you keep the whole High dialect being Spook... How long were you waiting to do that?
How long was I waiting to do High Imperial? Which is Spook's dialect, turned into a pseudo-religious ancient language. Oh, man, that was so much fun. And you know what, that was one I came up with pretty late in the process. Because, if you know about the Mistborn trilogy, Spook became a larger character as I wrote him. The biggest deviation between my original outline for Mistborn and the final of the Era 1 trilogy is that I added a big sequence with Spook in the third book that had not been in the original outline. So, it was pretty late that I decided that Spook would have an influence over that. I just laughed uproariously when I came up with it, so I knew it belonged in the books. But if you haven't read the new Mistborn books, High Imperial is an ancient and important language.