Hi Karen and Joke. This would only be for Add Person pages, right? Would it make sense to put it on profile edit pages?
Edit: I've added this to the WBE, but I'm not putting it on edit pages, because if the user has set the default language to German and then they open an edit page of an American, for example, and they edit it and save it, the location in the select box will be saved as German (unless they change that before saving it, which they're likely to forget to do).