Would be nice to have these features to get it to next level:
1) Add support for sections/categories and direct article display (much like other tab modules), such as intro text, title in tabs, read more link, etc.
2) Add 3D look and few skins/CSS layouts
3) Add images to tabs
4) Fill up to rectangular shape (outer border), and have auto, fixed or even size tabs
5) Optional rounded corners, background images, etc.