Geez, I don't see why people constantly crowd the interesection from cross streets. It has the opposite affect they want. Even driving my truck my reflex is to slow down and give myself more options to manuever. If they stopped where they were supposed to and stayed there instead of crowding the interesection or rolling bumper into the street hot they would actually get to go sooner.
It scares the lving bejeebers out of me when somebody rolls hot right up against my lane or keeps jumping forward a few inches at a time. I slow down. I'm not trying to be petty and make them wait longer. It scare me when they do that and I slow down for my own safety to give myslef more options.
Stop like you are suppose to and you will get there faster.