There should be an option to put the label text for stacks on the side. That way there's a neat effect when you use only 1 column and no background or border.
Also, shadows for icons and a (kiba-title-like) border around the labels would be cool.
see this image munze had: http://www.picoodle.com/view.php?img=/9/9/3/f_screenshot9m_29d2496.png&srv=img40
In this view, side text is better.
thanks!