Well I have a feeling (or at least I hope) that it will never become the norm to have an extremely suspenseful movie with no climax and instead just peters out in the end.
*warning specific spoilers*
And the fact that they don't show the final showdown, but they do show the bad guy getting hit with a car. There was no point to that scene, we learn nothing new about the character, it was a completely random event and it had zero effect on the story. It was as if they knew the ending was so unsatisfying that they tried to throw out a small bone to make up for it, but the problem is there was no meat on the bone. You could say it just shows how life is random like the flip of a coin toss, but thats just dumb.
And honestly, I felt like they did do something different just for the sake of being different.