There needs to be a good way to get advanced analytics built into SPO. The site usage report is very insufficient in many ways. If site usage is the only analytics can it please have more in depth details?
For instance in the site usage report there is a section that shows you the most viewed documents, but this only give a week in the past view, it would be great if there was built in logging that showed months in the past so there can be an analysis trend. Also a view of links clicked.
Not just site visits/ unique visits.
Please escalate this to engineering for building into the product for SPO.