Just because you let trials be decided by judges does not mean it always has to be a single judge deciding a case. Based on the severity of the crime you can ha

Just because you let trials be decided by judges does not mean it always has to be a single judge deciding a case. Based on the severity of the crime you can have multiple judges decide the case. Also you can keep a right to trial by jury for the defendant. If the defendant decides they'd rather by judged by their peers they can choose a trial by jury. It's their constitutional right in the US after all.