That would have some downsides. You to browser behavior to url in a way that never been done before, it doesn't really account for mime types or content encoding, it isn't backwards compatible at all, it doesn't allow you to use one resource in both ways, and it relies on duplicating all extension names 2x for all video formats and times no one unrelated will make a video formats ending in 'l'. If we must change this some combination of css and/or js would probably work better. Like 'img { repeat: none; }' for example
