Not a technical problem, but a physical limitation caused by lack of screen space. I have 70 students and a course with around 20 graded items. I have been trying to add grades manually to the gradebook, but its impossible to find the right cell as the names of students and assignments are off screen. I can scroll to find either one, but then I can't remember where the other was.
I might manage to write this if other stuff has no hiccups.