The rounded corner borders are in there and would make life a hundred times easier. That and the gradient backgrounds would be top of my wish list.
The ability to add more than one background image to an element, but I think is covered by the layering background images.
But it’s amazing how you learn to work around problems to the point were you forget you ever struggled.
Drop shadow, both external and internal, with an ability to determine the amount it fades out and the length.
This is worth some more in depth thought. *bookmarks page* Sorry for the stream of consciousness.