Event Report: Registrant summary report: include filter by event dates

Every other report event report I can sort by event dates, this report I can only sort by the date the person registered.  I need to be able to sort by the event date so I can find out information like... how many unique players signed up for PB drop-ins from X date to X date.  It doesn't matter when they registered for those events, I care about when they played.

Or add the unique registrant data to the event summary report that already lets me sort by date of event.

I chatted w/Doug and he said this is not currently possible.

Thanks!