Some interesting comments that I've not seen before:
-Confidence in what you're doing increases speed. (I can't help but believe this may be one cause for our up & down offense the past 2 seasons)
-Hash marks & how it changes the dynamics of field position
-Use of hand signals and how they communicate better than words
-Emphasis on pushing a defense to have to tackle in space (I'd imply this is one reason why Steve's Fun'n'Gun was successful).