We are working on many of these report areas right now. We have a tenant-wide user activity report in development right now. The next report we will work on will be a tenant-wide site usage and activity report. After that, we will look at various other tenant-wide reports, including page-views, and storage metrics.Cindy Casto commented
The O365 team indicates they were working on it in August 2015 and there is no further update. I'm finding it very difficult to provide management reporting on usage (hence value) of our SP Online environment without meaningful reporting. My only options seem to be 1) Pay extra for a 3rd party reporting solution or 2) Use Google Analytics (which only provides super high level data.
How is it that 3rd party partners are able to access our usage data but we, the customer, cannot?