Right now, the workload measures the hight of every day's stack of paper on each project members' desk, figurativly speaking. With this information, we can decide whether to put additional paperwork (cards) on someones desk or not.
What we would be interested in in addition to that, is to learn more about the efficiency of our project members, meaning how many cards they move in a certain time, comparable to the "Burn down" in the dashboard of each project. With this information, we would be able to make more qualified decisions on who on the team can work on additional cards and who should fokus on the ones existing.