In some cases I could see how it would be beneficial for the judge to have a solid understanding, and previous experience with, the subject matter in order to be able to make more informed decisions. Some bad decisions are certain made now by judges that don't understand the complexities or technical nature of some cases.

One of the benefits of the common law system is that courts can use previous rulings as a basis to maintain consistency in enforcing the law.

It's unfortunate that until there are well established precedents that a the result of a complaint is a bit of "luck of the draw". One file sharer could end up with a huge judgment while another gets the case thrown out, depending on a judge's understanding, or lack-thereof, of the nature of the offense.