I think one philosophical consideration is that we can't prevent all perversions human nature in a free open society. It is a price of liberty that we may ourselves open to such events. An extreme example of this is the US where there is the liberal right to carry weapons yet it would be very easy to question this policy. In reality it is part of the US constitution on which their nation is founded aligned to liberal principles.
In order to realistically prevent another Lucy the procedural changes that would be needed to be introduced into a complex organisation employing 500 000 people that look after the most vulnerable in society would be unrealistic. We cannot routinely refer clinical incidents of medications of morbidity or mortality day to the police; there simply aren't the resources. The NHS is ill equipped at best to routinely audit clinical outcomes so how is it envisaged you add new layers of bureaucracy and protocol to prevent rare perverse criminality?
Someone once said that you can't legislate against human nature and this is a perfect example of this. Human nature throws up distorted personalities and possibly it will be ever thus. Can we really ever combat this?
I think spending money on an enquiry on a thankfully extremely rare never event might be counter productive. We will haul a number of hospital employees before a comittee , many of them in employment with due consideration of their careers and realtionships, to be asked why they delayed response to a previously unimagible event, that of a psychopathic nurse that was adept at using her medical knowledge to kill I'll neonates, for what purpose?
Do we want to see this public castigation because ultimately there , s only one person to blame, Lucy. Is it fair to start apportion blame in a scenario most right mixed people will not conceive of? Is the purpose of the enquiry a visceral societal reaction that we somehow have to expand the blame and there is some unknown panacea to prevent the killing nature of some humans?
I can understand Grenfell as you can put policies in place to prevent the use of flammable cladding in future in building and there is realistic proababilitybwith out the enquiry the disaster may have been repeated and, yes, there was blame in terms of disregarding fire regulations knowingly.
However this, what are we actually going to learn?