border-spacing flaw

Hi,

Why aren't there border-spacing-top, border-spacing-right, 
border-spacing-bottom and border-spacing-left properties? It would seem 
natural to have these, along with the shorthand property boder-spacing, 
akin to how this is done with margin, padding and border. Will CSS3 be 
able to do that?

- Håvard Skjæveland