There are 3 main issues at play here:
1. GD tries to marry a short, horizontal passing game with zone, power running game. Recipe for disaster as the box is always loaded. The best passing scheme to marry to a power running game is a play action game that utilizes tight end seam routes, mid tier crossing routes and deep post routes. All 3 take advantage of linebackers and safeties cheating up to stop the run.
2. Read & React/Sight Adjustment Routes vs. Preplanned Routes. GD does the former and it killed JVB and the receivers as they were NEVER on the same page. And it's coming back to bite us this year because we don't have the receivers with enough skill or experience to know how to alter their routes accordingly. Couple that with an Oline that has been shuffled nearly every game because of injuries and it's a recipe for disaster. In fact, I think read & react passing game has no place in college football for the most part as you typically can't have the appropriate practice time to develop chemistry on those kinds of routes between QB and WR like you can in the NFL where virtually all routes are read & react or combo routes. Plus it requires way too much thinking instead of playing. The reason we keep our defense as simple and as "base" as possible is it's supposed to allow the defensive players to play fast and not think. We do the exact opposite for our offense and it's killing us.
3. Which leads to the last point which is a flat out deficit of skilled receivers during GDs tenure. Under KOK we had Scott Chander, Brandon Myers, Dallas Clark, Tony Jackson and Tony Moeaki as TEs along with Mo Brown, Clinton Solomon, Ed Hinkel, Andy Brodell, DJK, and Marvin McNutt as WRs. There was a year early in GDs tenure where the staff admitted to robbing Oline schollies to try and get more skilled, fast WRs. In that class, none of those receivers remain and the result is that we have to play walkons on the Oline. That is absolutely terrible scholarship management and was instigated by GD.
This marriage ain't working and should be ended at the conclusion of this year.