Caveats before I reply to this: I am a HUGE 3O fan and was/am an ardent supporter of CPJ. My favorite part of this board used to be Longestday(?)s video review of the play calling and @ilovetheoption breakdowns.
When CPJ retired, my first impulse was to hire Monken, Coach N, Bohannon, or one of the CPJ disciples to run the program. After talking with some friends who are high School football coaches, I was convinced this was not a very good idea. CPJ was, to use your analogy, a grandmaster of his offense. Not just a grandmaster, but the 20 time reigning world champion grandmaster. NOONE knew that offense better than he did, and none of his disciples are anywhere near as close to being as good as he is at it. If GT was still a 7 win team with upside under CPJ, chances are we'd be a borderline bowl team with limited upside under any other COJ disciple. CPJ excelled in adapting even with in drives and his coaching tree isn't to that level. Now, while a lot of us would take being a borderline bowl team with limited upside right now, we would have howled if the new coach had come in and had a 5 win season. Since we couldn't get the same level of coaching talent, a new offensive scheme was required.
Caveat: I do NOT think that we considered this in our move away from the 3O, rather I believe boosters were simply tired of the "option."
The next thing my coaching friends told me was that OL was going to be the longest pole in the tent and replacing, developing, and deploying a functioning ol with proper depth was a work of several years. The most charitable answer I got was 3-4 years at the earliest, more likely 5-6. So far, this has proven to be eerily accurate.
I was also told then that they were extremely surprised we hired a defensive guy to rebuild a team who's offense was going to require a drastic rebuild, and then put that rebuild into the hands of an OC with no P5 experience. I tried to give CDP a lot of grace (after all, his first coaching gig was at my Alma Mater) but it was fairly clear after year two he was in
WAY over his head.
Finally, Ilovetheoption said it best. We made a gamble that we could leverage recruiting in the ATL and southeast to run a more NFL like offense and compete. So far that's been a bust. Recruiting is improved (rankings don't tell the whole story there) but even that improvement has shown how little it does without development and proper deployment of talent. I don't think the experiment
HAS to be a failure, but I don't think a defensive oriented coach is going to fix our issues. We need an offensive mind to come in here and start deploying our talent properly. Whether that's with a scheme or simply tempo is immaterial, we need dedicated help on that side of the ball.