This. It becomes harder and harder to develop interfaces using progressive enhancement, since the expectations from web interfaces are keep changing while the U

This. It becomes harder and harder to develop interfaces using progressive enhancement, since the expectations from web interfaces are keep changing while the UI components available in native HTML are stuck in the early nineties. HTML 5 didn't fully address this issue. For example, this is how sliders really should look like: http://worrydream.com/Tangle/ http://worrydream.com/Tangle/ We need trees. We need pure-HTML drag-and-drop support. We need simple components that can be combined to create complex, usable interfaces.