OF course you can -- DTD's goal is no longer to entertain just resort guests -- its also trying to satisfy the local subdivision population that treats it like the neighborhood "mall" -- I don't think at this point in time you can base anything at DTD on resort guests alone. Once upon a time, the entire goal of DTD was to keep resort guests on-property and not heading off to Orlando and Kissimmee for evening entertainment and shopping. Now exactly the opposite is true -- they are trying to get more locals IN (and its succeeding quite well). It could easily absorb more diverse eating - and it eventually will, based on their tentative plans.
NOW -- on the other hand, there already IS a lot of diversity down there...
Italian, Cuban, Irish, West-Coast American, British...