Personally, I'd rather have a hamburger ring (hence the title of the post) because I think a domed, sesame seed encrusted ring at the top would look cute and make a funny engagement ring. "Here's the bun, baby, but you have to wait for the meat". That's vulgar.
* If you're vegan/tarian, you can pretend the bacon is seitan. Or avocado if you're a celiac vegan. Let's just put avocado on everything and call it a day.