I enjoy, how it's actually packing more features than you'd originally expect from a tabular issue editor. You'd only expect easier bulk editing, but you get aggregations and issue hierarchic views for free (thus also removing the need for using other reporting tools). Very pretty, truly functional.
As a beta user, I can vouch for the ease JXL brought to our team in terms of doing bulk editing. JXL brings the familiarity of spreadsheets to our "issues" and that has been a game changer.
Finally, our scrum master can wrap up in time! Looking forward to future releases.