Speaking of fancy, check out those toothpicks holding that mess together. Worth $100 right there. How are you supposed to eat that other than with a knife and fork? The second you pick up any, it will all be in your lap and look how they did that V slicing of the roll.
I have big issue with the brioche, a pervasive sandwich abomination. It just isn't designed for and lacks the structural integrity to heft real sandwich innards. I haven't had one yet that held together until I was finished.
I'm definitely ok with creativity applied to the classics but sometimes, simpler is best. As to the OP's link, I do like the sounds of that but, if I was going to Caribou Cafe, I'd likely get a more typical bistro dish.