Look under recruiting team rating and look at the 2017 recruits. One TE at three stars, another at 2 stars, and an OL at three stars. I would sign at least 5 for the OL . This is everything for the offense. Even Joe Montana slinging short pass would not succeed. Where is his brain?
The offensive line needs some work but the problems are with'complimentary' football as Butch likes to say and overall offensive design. Its hard to hang it all on personnel and technique.
Problem 1 ) Butch like to only keep in 5 blockers. The issue with this is that the QB has to hit intermediate passes. JD is inconsistent and inaccurate on passes beyond 7 yards. The defenses put little effort into defending intermediate routes and place 6 or 7 guys in the box. 5 guys cant block 6 or 7. Do you realize that at USCjr...they had 1 guy covering 2 receivers at times? That's how bad it is. 4 receivers is a waste if you cant complete a pass to 1 receiver. Keep in extra blockers
Problem 2) This is a layered west coast passing tree run from the spread . Most of your routes are going to fall withing 7 to 15 yards ( see problem 1 ) . In this kind of offense the ball must be out of the QBs hands in 2.4 seconds...not quite 3 heartbeats. The timing patterns that make up this system depend on it , and the rationale for keeping only 5 blockers depends on it. And yet we see Dobbs holding the ball for 3 and 4 seconds ...just not gonna work.
Problem 3 ) the zone blocking scheme is part of football. The way this scheme is coached is for the linemen to enter their zone and basically get in someones way. There is a way to attack the zone and try to clobber the first man in your zone and drive block him. Thats not what we do . There is no delineation between run blocking and pass blocking. The offensive linemen don't know if it will be a pass or run because of all the zone concepts...but the QB run is not called enough for this to be effective and when it is a zone pass ...again Dobbs cannot hit the intermediate routes. The premise of 'draw concept running is not going to work because again, there are 6 or 7 defenders in the box!
I am not saying you are wrong about personnel but I think QB efficiency , a flawed blocking scheme, and delays in ball delivery have as much to do with the problems as anything else. Joe Montana would work wonders for this system because the ball would be out on time and accurate. The defenders in the box would step out of the box to defend the intermediate pass and you would have 5 on 4 blocking and the run gaps would free up. Then the blocking scheme and inside zone concepts would be valid.
The bigger question is why are we not using Dobbs considerable skills running outside zone and adding more blockers when he doesnt have the passing acuity to execute this system?