Interesting topic. I know a lot of people are gun shy about messing with "the formula" after the 2013 debacle, but CPJ himself has experimented with the shotgun even before that (Remember UGA game 2012?). If you go back and look at tape of when he was an OC, he varied formations a lot back then (comparatively speaking to his GT days of course).
There are pluses and minuses to what you propose and really it all comes down to personnel and talent. I believe
@ATL1 mentioned his recent conversation with Tevin Washington about putting JeT in the shotgun to make use of his talents. I think if you have a veteran OL and QB, which GT does, transitioning between formations is easier because really they are the ones affected by the change moreso than the skill guys away from the ball.
Aesthetically, some people would prefer to see us incorporate some shotgun/pistol/whatever new fandangle formation, and I've always been a fan the passing game, but I think GT and CPJ "are what we are". I've come to terms with it, and as long as we win, I'm fine with CPJ's flex option. After 7 seasons of it, I"ve come to appreciate the subtle changes in certain approaches from season to season, and the subtle adjustments from play to play.