If I were king of the forest I'd interview everyone in the building. Ask them what they have done, what they think they've done well or poorly. I'd keep an open mind. Shouldn't fire employees for being loyal. Because you would want them to loyal to you. I would replace those if I know the new guy's going to be better.
I would interview the players too. Don't need to get rid of everyone. It's weeding. Don't need to throw out your good plants. As far as GW I'd ask what he felt went wrong. Strong D and then total collapse. GW is good at what he does so I would listen carefully and see what he would want to do to improve.
You know the old adage, if it ain't broke don't fix it. Well the Rams are airplane wreckage right now. You scour around to find the black box. You investigate the crash. You look for survivors.