I'm skeptical of BP. I think he has plateaued.
If a change is made:
Hire a proven HC, OC, and DC. No on the job training.
My biggest beef with BP: For such a tough-nosed head coach, BP cannot coach it into his players. Starters are not pushed by 2nd and 3rd stringers, because the backups cannot get on the field in a game, unless the starter is injured.