I think we should be able to throw away finished burgers. I accidentaly made the wrong burger and I had to give it to the custimor. (They didn't like it)
There should be more sights you can go to like if you get all the achievments for one sight then move onto another the zombies would be defrent and would get harder to kill depending where you are. And you could find more survivors! and by the end you could maybe make it to the safe point.