New Languages for New Worlds

The New York Times is running an interesting piece on the fictional language Tho Fan, which was invented for BioWare's epic Jade Empire. Creating completely new languages seems to me like a great way to fill in the cultural details of a virtual world, solidifying the experience for players. Tolkien did it. Star Trek did it.

I haven't played Jade Empire, so I can't really comment on the effectiveness. Has anyone noticed this new language? Does anyone have any insight into whether it helps the game at all?