Customizable dashboard reports/widgets

Let merchants customize the reports shown on their dashboard rather than being limited to the fixed default widgets. For example, choosing the time window for the 'units shipped' widget (7 days, 30 days, etc.) and tracking progress toward a custom monthly target or minimum. The concrete request that prompted this: a client wants a 30-day units-shipped view to monitor their progress toward a 250-unit monthly minimum, alongside the existing 'units shipped in the last 7 days' widget. Requested via 1 Stop Prep on behalf of one of their clients.