When viewing the bar chart for a Custom Statistics tab, I'd like to be able to specify a display order for the defined filter groups in the chart. In the table above, each column is sortable, but that doesn't seem to affect the display of the bars in the chart below.

Ideally, there would be one more data point stored with each "filter" group - that of a sort order - an integer field which could be updated using the "Edit..." button, or, optionally, via drag-n-drop in the table.

Then the chart could use the integer value to determine the order of the bars display.