When you add a larger number of metrics to a PerfStack graph, the graph gets stretched vertically to accommodate the legend. This happens to such an extent that it is no longer visually appealing. If we had the ability to move the legend below the graph, it would prevent this from happening. Also, if we put the legend below the graph, splitting the legend into a couple columns would be a good way to conserve real estate on the dashboard. Another option would be to auto hide the legend unless you hover over the graph.
