I have actually been following the HTML5 mailing list for a while. I would provide feedback there, but I get the feeling that my approach/philosophy might not jive with what’s going on there and I would hate to be counter-productive and waste people’s time. If I find something helpful, I’ll be sure to pipe up!

In response to XBL2 and IE databinding - I actually really like the concept of XBL2, but the syntax seems very clunky. (Not only that but it hasn’t actually been implemented so its kind of hard to play with) Let’s put it this way - I would love to have it as an option, but if there was if there was a choice, I would probably steer it in another direction. As for the IE databinding, that is a pretty sad implementation in comparison to something like what Flex or JavaFX provides. I can see why it didn’t gain much ground.

HTML5 is definitely not enough. It’s just one part of a much bigger picture. We have to start somewhere!

For example, custom components are possible with XBL2. Data binding hasn’t had much demand — IE has supported it for years, but it got basically no usage. (Contrast with, e.g., or XMLHttpRequest, which took off so much that other browsers were forced to implement them.) HTML5 is getting implemented pretty fast; some parts are already in most browsers with shims for the others (e.g. canvas).

If you have any feedback on HTML5, especially regarding what’s missing, please do let us know. See http://www.whatwg.org/ for details on how to take part.