I think you have it covered fairly well RR.
When you don't have the required player talent
Everything else looks poor,
lack of endevour, more mistakes, bad decision making, poor kicking that results in turnovers etc.
all stem from having players with talent levels lower than their opponents.
You cannot replace 7 -8 players ( especially in the GWS era ) but you can replace a coach.
Unless he has talents that we in the outer don't see I think he is for the high jump.
Unless a mircale happens there will need to be a sacrificial lamb by year end.
That will be DB wether he deserves it or not.