Why is it useful:
It would show the total record count of list reports without having to build a separate widget just to see the total number of records that meet that criteria. SAVES ME TIME AND CLICKS (hooray!)
Who would it benefit:
Users using list reports in their dashboards to understand the number of records that meet certain criteria.
How would it work:
Almost all of my most useful (action oriented non-snapshot/graph) dashboard widgets are lists of Ideas. I want to be able to quickly see the total number of records - either in the title of the widget to the side, or at the bottom as a row count - without having to click "Open Report" to see how many ideas fit into that bucket. It would help me better manage the list of things that I have and use that to gauge how many my team members need to triage across the different idea categories we have.