Add new input types:
input type=video (upload your video response)
input type=audio (want to leave a message? audio forums?)
input type=USB device (e.g. credit card readers / USB reader, this will enable true applicaitons via the web)
richtextarea (no reason to be dependent on third party objects for this)
One more thing, I am not sure how to put this nicely, so I will put it the way it is. This website, and Ian Hickson's website are an embarressment for the web, the look and feel completely out of date. The registration process to this website is an haressment to the end-user. It can be done so much nicer and better.
But the most embarrising is having a forum that looks like it was picked up from the age of the dinosaurs and has a "U" element button for underlining text, which is on the list of tags to be finaly removed from HTML5.
It is scary that a potential future of the internet seems to be managed by people that live in the past.
Really, you can afford to hire people to better than this. If you want me to do it, I will.