The Adhoc report functionality has only basic level of filtering for date/time types of fields.
It would be very helpful to have the reports be more dynamic to have "in the last X days / months" which will enable a report to be scheduled to capture the only the most recent types of events etc.
Additionally being able to export the event date type fields as date (or time) as opposed to date & time. this helps with the analytics and reduces the amount of steps for the end user