Multiple background images is the most important feature im my opinion. I honestly can’t wait to implement this, even if IE users will have to cope without for awhile. 😉
Just wanted to sum up some of the features mentioned above, which I would definitely see a use for.
– background-attachment: anchored
– background-repeat-direction
– background tiling
– atomic background positioning
Gradients I’m not so sure of. Perhaps this should stay an SVG thing.