QML Rectangle does not support all CSS 2.0 properties, where QWidget does

QML Rectangle does not support enough styling properties, compared to what a simple QWidget used to offer through CSS:

In QML you can set borderWidth (border-width in CSS) and borderColor (equivalent to border-color in CSS),
but this set all the sides the same border. It would better allow like CSS changing all sides OR side-by-side:
borderWidth.left, borderWidth.top, borderWidth.right, borderWidth.bottom
borderColor.left, borderColor.top, borderColor.right, borderColor.bottom

Same problem with rounded corners, QML support only setting the same rounding on 4 corners, it lacks subproperties :
borderRadius.topLeft, borderRadius.topRight, borderRadius.bottomRight, borderRadius.bottomLeft

It would be nice if it may get fixed really soon, because I really need this to create good looking skins,
and I don't want to use borderImage to solve the issue, since I don't want to use any pixmap to skin the apps.

At the moment I just can't fix the issue so I must keep stuck on QWidget, and I likely will until it get fixed.