*grin* It is in my Galaxy world, too--but it's a little like Tolkien's Westron, where they're "really" speaking another language, but it gets translated to English. (Always seemed natural to me to use English to represent the common language.)

For some reason I like how it's called "Basic" in Star Wars. It just seems like such a misnomer in a world where most of the sapients can't produce the sounds.