Not enough pressure on QB or edges. If that means DB's are more on their own with WR's so be it. Current ease with which opponent offense move the ball and decide where to attack just makes no sense. Only reason didn't give up another 400 yard passing game is how easy SMU got to over 200 yards rushing.
Unless these are exhibition games coaches should be doing best to win, if this is best they can get out of defensive personnel after 4 games it looks like 1-11 really is in the cards. Giving up 541.8 yards per game is a lot, 125th worst out of 129. Only our buddies from ECU and Tulsa plus one Sun Belt team keep us from topping (or is it bottoming) the list.
I don't care what type of scheme want to base defense on, just use personnel so current 3 best lineman and 3 best linebackers have chance to perform. It's like Ollie having Shabazz's 2014 team and deciding "got to pound it inside to Brimah"; hmmm, maybe problem here is Brimah can't catch, pass or shoot the ball and if you want to win you need to play "guard" ball. These are not the 1987 Bears on defense but these coaches have them playing like the "bad news bears".