-Specify a position of repetition of the image. In some cases they call that as tile, it is used in the visual themes of the windowsxp and longhorn. Look at the image:
!http://img.photobucket.com/albums/v381/zephon/image-tile.jpg!
Of course would be better with attributes as “top-left-tile” or “bottom-left-tile”.
-Borders and background gradients, without proprietary tags or DirectX effects. It could use an image as mask with Alpha channel besides the background image or color.
-border-top-left-radius with double, dashed and dotted styles, of course yes. It would be good inner-border-radius and outer-border-radius.