When you hover over your mouse in storyboard or team room the story description is shown. As we can define acceptance criteria in the separate field we would like to see the AC in the preview as well.
This may easily be used by the team i.e. on a daily stand up when they discuss plans for next day referring to what's else required and verifying with the AC. While discussing several user stories it'd be more efficient if the preview shows the information instead of necessity to open the story and close every time (people need to just glance at the AC to confirm they didn't miss anything, or to remind the AC details)