It drives me nuts to see the opposing QB line up and look at our defense positioning, look to the sideline and change their play without our guys so much as twitching when the new play comes in!
I would love to see the defense switching their look a little whenever the QB changes the play, EVEN if they still rush the same guys in the same gaps, disguise it a little better by adjusting positions after they change the play because of our scheme.
I love to see the linebackers creeping up and dropping back as the opposing teem is trying to get their play off. It keeps the QB off guard and the O line as well.