An instructor on our campus brought this idea to our attention. They teach a large course with different group assignments and group discussions. Certain people on the teaching team are responsible for grading the assignments of specific groups. As such, they will typically navigate to the specific group's page, and then click on Grades (or Assignments), and then go to SpeedGrader. However, this will navigate to SpeedGrader for the entire course (showing all students in the course) instead of showing only the group for that specific group page.
From the instructor's perspective, it would be nice to not have to sort through a lot of other students when they know that they are already looking only at a specific group.