Help and Support Menu - "my tickets"

The "My Tickets" view on the help and support screen is not very user friendly. Tickets are currently stored according to who raised the ticket. So, we have an employee who left months ago but their closed ticket always shows up first. We cannot sort by date that the ticket was raised or by open and closed tickets. 

Could you please change the system to allow users to sort it by one of the categories (Subject, contact, last update, status).

If this can't be done then at least change the default so that open tickets are at the top (or at least the most recently updated ticket is at the top)