It's not about what you eat, it's about recognizing all the thing you are thankful for.
While the whole Thanksgiving thing can be a whole lot of work, and go unappreciated with turkey and all the trimmings I can honestly say that the 2 years we lived away from family we did not do traditional Thanksgiving.
One year we did Steaks, and twice baked potatoes, and cesear sald, my favoritest meal ever. The next year we did fajitas. (I did work thanksgiving both of those years too).
Anyway Good well made burgers with a few extravagant toppings like Havarti, or blue cheese, some advocodo, and special high quality buns sounds fantastic.