As far as the subtitles, I think it was planned to use some kind of really obscure language--at one point, there were tests done for using Aramaic from "The Passion of the Christ," which turned out pretty nicely. Then there was talk of someone actually recording new dubbing, but I don't recall if the language was going to be made up, adapted from another language, or adapted from a Star Wars language. There was quite a bit of discussion on it a while back. I know we've come to the conclusion that Jar Jar will be dubbed in English, and I think a few others will be as well. It's been a while, though, and I'm not sure where we were headed with that. But it will be either dubbed in English (adding some effects is a good idea, there), or subtitled, so either way, we can call Maul/Grievous what we want to in the first one, thanks to Nute.