I agree with scrapping jury duty. But something else has to be in place, you can't just get rid. I'm thinking employed staff who have had foundation training in law, ethics, criminology etc. They'd be in court already so no need to pay expenses to random members of the public on jury duty. If a case is postponed then they attend another case or travel to another court. It seems to be a more efficient way of doing it.
I can't think of another scenario where you pay members of the public to make ethical decisions that could significantly affect a person's life. There will inevitably be prejudice based on what has happened to a member of the jury in the past, e.g. I was burgled once so any burglar I'd probably say was guilty, especially if they sound like a wrong'un