Working with other eDiscovery platforms there are ways to get reports on user activity. Specifically looking for reports on users activity when it comes to tagging records. The report would be able to be run on individual projects for specific date ranges. It would pull a list of any user on the project and a list of records they have tagged in the given time period. This report then would be exportable to excel/csv or dat file.
It would also be helpful to be able to run reports on a higher level. Total number of edits by user per day and per hour.