Flawed thinking imo. Getting better overall means continuing to improve on a top 10 offense by keeping the system in place, the QB in place, giving the QB an actual off season with the coordinator, having a healthy WR corps, adding a small piece to the offensive side to maybe help imrove it even more, all while addressing the real issue: a very below average defense. Thats getting better overall imo.
Losing the OC and replacing the QB isnt getting better overall, its blowing it up and hoping for the best.