> There are good reasons why we try to minimise how much of law enforcement that are left to peoples discretion.
I don't know where you're getting this from. Practically all of law enforcement is left to people's discretion. The people exercising the discretion just aren't members of juries in most cases.
No, they are police, prosecutors and judges. And that is one of the problems with the US system of justice. Justice is supposed to be blind. As it works now, the white upper class kid gets a slap on the wrist after raping an unconscious woman, while the black kids go to prison for minor possession. And since the people in charge don’t have worry about the laws being applied to them, they introduce outrageous laws. The governor never has to worry about his daughter going to prison when she needs an abortion.
I don't know where you're getting this from. Practically all of law enforcement is left to people's discretion. The people exercising the discretion just aren't members of juries in most cases.