I have seen other requests for veggie burgers and vegan options, but people who go to Five Guys want the real burger experience.  I think a way that can make everyone happy and still have this experience would be offering the Impossible Burger or the Beyond Meat Burger (and Brats as a vegetarian/vegan  hot dog substitute).  Many other restaurants and fast food chains are using them as options with great success.  Please offer one of these options in the future, I miss Five Guys!