Yes there are feet in that picture. We thought it was amusing . . .
Anyway, there are few things better than the perfect burger. But there is so much that has to be right for a burger to be the perfect burger.
There is the bread - perhaps first and foremost, but some would place that with the patty. And there is of course the patty. For me, the perfect burger is always a cheese burger and therefore there is the cheese to consider. Then there are the sauces and condiments. And for some, especially New Zealanders, there are what I shall file under other ingredients.
So, the bread : I personally think that the bread needs to be substantial, have something to it, complement rather than pander to the meat patty. I like homemade soft milk bread rolls with sesame seeds on top, occasionally poppy. There has to be resistance in the crust, but not so much that it causes the insides to fall out. The inside needs to be soft so that it melds into the contents. But having said all that, I do also on occasion like to have a bought plastic softer than soft six to a packet burger bun and a burger like that is all about the meat. And sometimes it has to be all about the meat.
The patty : I just like to squidge good mince from the butcher with some chilli, garlic, and pepper and sometimes an anchovy, with my hands until it comes together - no need for egg - and form into patties. The patties have to be griddled in very hot cast iron or cooked over charcoal - they need to be slightly charred.
The cheese : some form of cheddar, or gouda perhaps and the slice needs to be put on the first cooked side of the burger as the second is cooking.
Sauces and condiments : This is one of the three foods on which I like tomato sauce - the other two being hot dogs and cherrios! I also need a good schmear of hot English mustard on the lower half of the bun. The only other things needed are sliced gherkins and pickled jalapenos.
Other ingredients : New Zealanders are notorious for adding fried eggs, tomatoes, pickled beetroot and so on to their burgers. I, personally, would always have them on the side. The McDonald's Kiwiburger is a case in point . . . !
But a burger is a sandwich and as such is a highly personal thing.