Single sheet reporting where you can drill down from IP to hostname to username, port, interface, URL, search by specific time and date and generate reports based on search criteria. Add columns remove columns based on what you are looking for. Almost like logger but for reporting. Basically take all the separate useless reports you have not and put them into one. Stop making it look pretty and just do a simple report with features. In my opinion the reporting on Sonicwall was great "Analyzer" If you guys could look at that tool and implement those features you would get less suggestions about reporting. Hands down reporting on Sophos is terrible.
Take a look at Central Firewall Reporting, which is currently in EAP along with XG Version 18.