I personally think Daboll was huge in JAs success with the team.
I wont say he is the reason JA became what he is.
Id say that was chip on his shoulder, his QB camp and all the hard work he has put in.
Daboll has been with JA his entire career. 3 years of working together and making the offense work for both parties.
Losing Daboll will hurt, we will see a drop on the effectiveness in our offense just because of how acclimated JA currently is with it.
A new OC will bring in new plays and a mentality that will take time for JA to readjust.