What it changes is whether you can be criminally prosecuted based on circumstantial / irrelevant / trumped up evidence. Although that is obviously an improveme

What it changes is whether you can be criminally prosecuted based on circumstantial / irrelevant / trumped up evidence. Although that is obviously an improvement, it is of limited benefit if mere suspicion of criminal behaviour (including "terrorism", the current root password to the legal system) is still enough to impose serious extra-judicial restrictions on someone's life, and there are many laws and government mechanisms that provide for that.