My pro's of having sprint is when spawning in a large map, and want to get to a destination, you can sprint there, with out sprint, you have to wait along time, my self after playing loads of Halo 4 went back to 3 and literally used one toe to keep the left thumb stick forward was skyping my friend and took a bit too long to get to my destination. And the Con's are mostly the spartans are much more powerful with such a slight adjustment but I had to vote for sprint to stay because no matter how strong the spartans are, it's an equal match.