Visual feedback for percentage of points given
Especially when dealing with fast-to-grade problems, it's possible to accidentally select the wrong answer class without noticing. E.g. one might accidentally select "Empty" instead of "Completely correct", which is of course quite problematic. My proposal: color the background of the right pane depending on the number of points awarded:
- ungraded: blue (as so far)
- full points: green
- 0 points: red
- other fraction: some shade in between (e.g. yellow for 50 %).
Admittedly, this is not good for color-blind people, but maybe other colors would work better.