Imagine assigment where students can upload their work, receive comments from teacher and upload corrected work. The key element to quickly grade such assigments is to easily see, what contributions await grading (i.e. students uploading date later than teachers grading date). Right now teacher must manually compare dates - which is cumbersome for long tables.
If such rows were highlighted in some way (by color for exemple) all would be much easeir. I create improvment request MDL-14238 for this. Anyone who want this improvment is encouraged to vote for it so it can get attention of the Moodle staff.