osTicket v1.10 (stable) and Maintenance Release v1.9.15 are now available! Go get it now
I think you should offer a reset button for the statistics instead of forcing people to have to go through SQL to try and manually wipe out tables or what ever. Also, I think you should have a database backup feature and database optimization feature like most forum systems out there do. I have never seen any type of content management system / ticket system not have these features.
This is a really great ticketing system, but I feel there is still room for improvement.