Tracking count of MAU's for company account

Since PX is charging subscription according to the number of MAU’s, I think it would be extremely useful to have a combined number of MAU’s for our company account shown on some dashboard (perhaps under Administration section).

Right now if I want to track number of MAUs for our company and have an idea when we are close to reach another tier, I have to create a separate dashboard for our every product and add them up together in some excel product by product.