Currently, instructors can choose to allow a variety of formats for assignment submission. However, when the student submits, only one type can be used, unless the student elects to resubmit the assignment. Even so, if the student resubmits the assignment, the student can no longer see his or her first submission. So, if they make a mistake, they aren't sure what need to be fixed, because they can't see what they originally submitted.
It would be helpful to have students be able to submit a file type (graphic, or URL, or word document, for example) and then be able to also use the text box feature, in the same submission, to "tell about" their assignment. Ideally, the instructor would be able to see both submission types in the SpeedGrader in a single submission, and similarly, students would be able to see both submission types in their assignment submission interface. For instance, if students have to create an image of a floor plan for a future classroom, and then provide an "annotation" of that floor plan that describes how it illustrates their teaching philosophy, having the image be visible to the teacher at the same time as the annotation would be ideal. Another example would be an assignment that requires a link to a video url and accompanying text. If the students could submit the URL to the video and fill in a text box at the same time, they would be able to take advantage of the rich content functionality in the text box submission type (that is not available to them in the assignment comments area), and teachers would be able to evaluate the link to the video and the accompanying text simultaneously in the SpeedGrader.