Provide a way to view totals of all websites

[stavros-k]

Describe the feature or enhancement

Some things like referrers might not make much sense, but being able to see a trend of Screens, devices, and total views/visitors/bounce rate etc will be awesome.

Use cases is websites that are under a franchise, so each one is "independent" but due to being similarly designed/structured, an aggregate view will be good to extract some data.