If you have the time, I think anyone here who is likes interactive (version script) design of web pages will like this interview with Microsoft PM Kirupa http://blendinsider.com/technical/video-demo-overview-of-the-html-authoring-features-in-blend-2012-04-24/
I am hoping this is going to play well with KendoUI, because he really makes the case why you don't want to use a text style editor for HTML5/CSS3/KendoUI
- live interactive design surface with 2-way editing of CSS
- tools for styles, coloring, etc.
- editing animation states and even interacting IN THE DESIGNER with different control states
- excellent support for media queries against platform specific layout etc.
I certainly don't want to be tied to Microsoft platforms but I do think this tool or something like is definitely needed by UX people. It would be nice to swap out the MS-JS stuff and swap in the KendoUI stuff. (or dojo, or whatever).
I am going to try this out and report back on how it works for me (but then I come from the XAML world).