Love this. Especially the part where you don't spend time building yet-another-dashboard page. Once you've settled on the graphs you want, you could then integrate them in your product admin directly if you want.
It sort of reminds me of feature requests for sorting/filtering/highlighting data in HTML tables -- instead of trying to rebuild a crappy version of Excel in a browser, just add an export to CSV button :)
I think the biggest downfall in terms of dashboards is making things actionable and getting away from vanity metrics.