Blind Grading in Quiz Essay Questions

With an increased emphasis on bias and grading, there should be an option in quizzes for blind grading of essay type questions, similar to what is found in assignments. There has been talk in the Moodle community around the topic,and the conclusion was that teachers should edit their permissions within the quiz. I would counter that expecting a teacher to modify settings on the permission page for each quiz is neither realistic or advisable.