This may be too close to your chili, but I was at a sports bar a couple weeks ago and they served all sorts of baked potatoes. I had barbecued beef (sort of like Sloppy Joe), red onions and melted cheddar, with sour cream and chives on the side.
It was so good it hurt!
They also had pizza potatoes, with pepperoni, green pepper, pizza sauce and mozzarella.
I think your idea is great and should be lots of fun.