In light of that Florida murder case the thought of professional jurors came to mind.I don't know who first championed this idea but it's an interesting one to explore. I think the goal of a professional jury system is to lessen the effectiveness of emotional courtroom arguments and antics. The hope is these jurors would be stone faced and impartial. They would know the law because colleges would set up certifications or degrees in jury duty. Selection would be a simple randomized drawing of names. I think the downside to this is money. To have full-time jury members would be very costly. Who would pay for the training, too? How many people would voluntarily take a two-year course in jury duty just to become eligible? With a smaller pool of jurors, bribery may be more of a concern.