Resource graph showing assigned package disk space and bandwidth compared to available resources

As a cPanel & WHM user, I would like a graphic representation of disk space and bandwidth assigned to packages compared to available resources so that I’m able to quickly assess the resources available without overselling the server.

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While I can see actual disk space used in a list of the accounts on my server, or view bandwidth used, what I can't do is see a chart or graph of how the total assigned by packages compares to my server's overall resources. To avoid over-booking the server, it would be great to be able to see what the total reserved disk space was for all the assigned packages (even better if it could be a graph showing the individual packages with their contributing percentage of reserved space/bandwidth.)