Can you refer me to the post in which I said people trust the existing system? Because I do not think I have said that anywhere
You didn't say it but, by logical deduction, you implied it. I explained that in the first paragraph of the post you quoted. But let's resolve this another way:
If you agree that people don't trust the existing system, why do you think that they would need the equivalent of case law, as in the existing flawed system, in order to trust the decisions of expert panels?
(As it happens, I think the legal system we have in the UK is fairly well trusted by most of the population - the problems with it seem to be mainly its slowness, cost and perceived inefficiency). I cannot comment on levels of trust in other countries' systems.)
It seems obvious to me that the goal of any decision-making system should be to make the correct decisions as consistently as possible. Wouldn't you agree? I also think that the goal of a criminal justice system ought to be to protect innocent citizens from harm. Our system in the USA, which I understand is the same in the UK, sets different goals.
Ours is based on the Blackstone formulation which aims at not convicting the innocent. And while that sounds like a worthy goal, it results in a body of laws that make it difficult to convict the guilty as well -- which undermines the goal of protecting the public as well as the goal of consistently making the correct decisions.
The Blackstone formulation also results in these side effects:
1. A system that doesn't take the criminals off the streets creates vigilantes among its citizens.
2. Law enforcement people and prosecutors feel justified in cheating to get convictions of the people they think are guilty.
3. Amateur juries can be manipulated by sharp lawyers so they can't be trusted to make the right decision.
4. And because juries can't be trusted to make the right decisions, prosecutors can coerce innocent defendants to plead guilty to lesser charges by threatening far more severe charges.
So, ironically, a Blackstone system that begins with the goal of not convicting innocent people often ends with innocent people being coerced to plead guilty while the system undermines the goal of protecting the public.
The Guardian had this article about the UK system back in April.
The UK justice system is in meltdown. When will the government act? | Simon Jenkins