I have worked in social work and in an associated profession. I got out. I was told not to 'judge' and had to learn to accept 'good enough' parenting. Thing is.........all this anger, yes we need better child surveillance but you watch if try to up the ante with anything compulsory, there would be a massive outcry about rights.
Additionally I am now betting that the serious case review will find the same fails as in Daniel Pelluck, Keanu, Baby Peter, victoria Climbie's, Maria Caldwell FGS and many more........lack of communication, an optimistic view, agencies not fully following procedures.
Social workers err on the side of optimism, they want to help, they believe in change which is why it is so hard to tackle situations like the one this poor child was in. Someone should be appointed to be the 'bad guy' when a child is identified as at risk. Yes support and assist the family but the bad guy can be the critical friend, can look after the interests on,y of the child, to say the difficult things, to challenge the optimistic view. Give them the powers to enter houses, to check rooms etc. they can be the enforcers of social work if you like. They can think the unthinkable and say the unsayable.
The probation service changed it's philosophy from assisting and befriending offenders to one of managing risk, usually successfully. Something to learn I think.