Does "dropped the ball" now mean "reached a conclusion I don't agree with"?
There was no ball to drop. The crime-scene was probably the most mis-handled one in the history of modern British crime, but even that couldn't disguise Bamber's guilt.
I've course I don't agree with it because it's illogical. However this thread is about the 'usefulness' of a CCRC - and what may happen in NZ where fortunately despite a system that relies on 'executive powers' some of the old miscarriages of justice are being pulled apart. A fair verdict follows a fair trial, a botched inquiry doesn't lead to a fair trial - it leads to public disquiet, particularly where there is 'miracle' evidence and 'chance' finds after extensive crime scene searches. These are the headings that should require logical examination away from the adversarial system. If the building blocks are faulty, as you have admitted in the Bamber case, any attempts to resurrect a safe inquiry must be treated with sharp caution by a CCRC, not, as happened in Bamber forgiveness of 'mistakes' to favour the Crown, because that has already happened in the Courts and the verdict therefore remains unsafe.
I read a very interesting paper from an academic recently which described the British system of CCRC being set up using the wrong type of legislation, in other words beginning from a position that may have favoured the status quo, rather than a step outside to look back in at what might have gone wrong in a case which could be, or is alleged to be, a false conviction.
New Zealand may now have a chance to so something better than it has been able to do with the Royal Prerogative of Mercy, but which should, in my opinion identify known pointers toward miscarriages of justice in any case coming before it and see if the case against the convicted person had employed the known strategies that have resulted in false convictions worldwide. Your Bamber case for example and it's sticking plasters which followed a botched crime scene, evidence turning up after searches had already been made, witnesses with baggage, faulty crime scene analysis - all of which goes against a fair trial at the outset. You know the sort of stuff, a type of witchcraft which obtains followers and secret websites that allow no dissent of opinions because all the good folk 'know' what happened and become afraid or offended if someone tells them they're talking crap.
I do remember that crime scene enactment you did which ultimately favoured the innocence of Jeremy Bamber but which however upset you by reason that it appeared not to be the result you wanted. People wanting particular results and trying and trying until they get them is a characteristic of a miscarriages of justice worldwide. Certainly in New Zealand, but it appears our Courts may be modernising their view - not buying into one side or the other, or fresh designs that hide corrupt police and prosecution practices. Justice is about open mindedness and not forgiving inquiry 'mistakes' in a 'she'll be right Jack' kind of way.