I don't pretend to be a coaches a-hole, but the coach, any coach, has got to do a couple of things well:
A - Build the team relationship, and get a disparate group of people working together
B - Work on the fitness and skill set and get the players improving to the best of their ability
C - Do the analytics and work out game plans that work to our strengths and target the oppositions weaknesses.
In terms of team relationship, Hook seems to only work well with Queensland players, or at least that is what it looks like. Is this all on Hook? I don't know. It's possible he's being white-anted by senior players or even the Board and management. You would hope not but who knows. In terms of working on skill sets, you would hope players coming into the side have all the skills, but this has been a problem for a long time. Tackling, passing, catching high balls, all problems which well drilled sides don't have. That isn't all on Hook, that is an issue with junior development. In respect to game plans, I haven't seen any since Wayne Bennett. Price and MacGregor were clueless. Hook doesn't seem any better.
However in terms of getting a new coach, I tend to agree with Gordon Tallis, it looks like there is a lot more to be fixed at the club before a change of coach will improve things.