I often quickly need the Lenght of a Pipe-Run as an MEP-Engineer. A Pipe-Run may consist of a couple of Bows and Pipes. A quick way would be to select the Pipe-Run with "Tab" as it is now, and then in the Properties-Window see the combined Length of the Pipe-Run, along with Pipe-Size, Number of Bows and sow on. An ability to customies this "Combined-Category-Properties-Window" would be nice.
Attached an example of a Pipe-Run. This ability should apply to all types of View (3D, Plan, Section… etc.)