On the moderation tab for new quizzes, there is every option to filter "No Attempts Left," "Attempts in Progress," "Submitted," and "Auto Grading Failed." But there's not an option to filter students who haven't even started the quiz.
While I can go to the gradebook and send a message to those students, it would really be nice to have a quick overview ON the moderate page to see who has yet to begin.
Also on the Moderation tab, when looking at an individual student submission (such as manual grading for an essay question), it would be VERY nice to be able to switch to the next student without having to go back to the Moderate tab and having to remember which students had been reviewed. Again, I can do this in the Speed Grader, but it would really be nice to stay inside the Moderate tab.