Well summed up. I felt like the way the defense played looked like a first year HC/DC, almost like a scrimmage as others have said. Not sure who thought they'd be able to "try things" against Georgia State like it was a scrimmage, but I for sure got that vibe especially on defense.
JG is who he is, and unfortunately the early RB mishaps altered a bit of the personnel & play calling on that side of the ball I think. For me offense looked a bit better, the line did very well at running blocking & pass protection, but JG for whatever reason seemed to be in 2nd gear or something maybe overwhelmed even? He didn't force the issue, threw late often despite throwing hard and rarely seemed to read the blitz of the defense (which meant if a guy missed or didn't pick it up he took a hit). I'm not sure how confident I feel in the defense turning the corner against BYU, I think the offense can improve though. Might see Chaney scheme a bit differently and put us in better opportunities to hit big plays. Offensively I feel it's more like "tweaks" and one could be JG being benched. I'm sure Chaney is more than willing to play a different QB if JG isn't doing what he wants.
As for coaching, I think my biggest worries are Friend & Rocker at this point. Ansley called his first ever game, and Pruitt his first "hands off" play calling game...but Rocker/Friend have how many years coaching their groups and we just don't see them improving like they should be. Size & Strength are there, Fitz isn't the scapegoat. Really comes down to effort at this point for the LOS and if it's not there at this point, in game 1 of the season against a lesser opponent then it's the positional coaches you have to blame.