You don't want courts to be able to decide on Monday that you're going to trial on Tuesday. You don't want courts (or any other entity of the judiciary or law enforcement) to decide that you're going to trial independently and the next step is your trial. Regardless of your political persuasion most people agree that fast and efficient prosecution by the state is a Bad Thing. Slow is good. Lots of hands and eyes involved in the process is good. Justice moves slowly by design.