Absolutely! The orange dot is vital. I can't sit down in one sitting and grade all students at once. I need to take breaks and come back to it.
It would be great to grade only the questions that need to be hand graded. It would make it so much faster. If you really wanted to see a particular student's entire quiz, you could always go to moderate.
In addition to those, I would like is to be able to use the complete/incomplete feature, especially for the beginning of the year. Using the stimulus is a great teaching tool, like doing a scavenger hunt of Canvas. I don't want to necessarily grade it, though.