The overall dashboard is a useful way of seeing a summary of all workflow executions across all different organizations and workspaces which can be filtered to see just an organization or workspace of choice.
However, it would also be very useful to have an alternative view where you see the status of all runs of a particular workflow across all organizations/workspaces in a summary style similar to the per-workspace breakdown.
This per-workflow view could then be further separated into a per-version view.