As a JIRA plugin developer, I would like to add another tab to the issue preview panel

We would like to improve integration of our plugin Structure with GreenHopper. One thing that the users ask from us frequently is "we don't see the context of a given issue on the Rapid Board" - meaning, that you can't see the issue's position in a structure without visiting the issue page.

It would be great if GreenHopper provided an extension point that would allow us to add another tab on the issue preview panel. We would place a structure widget on that tab so the user can switch and see the structure pertaining to that issue without leaving Rapid Board.