A bunch of standards for the 39%... Most of us (being web-designers) don't even target our websites to people with disabilities (such as graphic oriented sites or vg sites &c). Anyways my point is, why not has the somewhat-bleeding edge technology on your site if it is
oriented for gamers and people of the sort. Base your web design not just on a global standard, but specific designs/templates for specific audiences. Such as if your site is for a local garage sale (or whatever community thingy) then yes W3c, you are right in your access guidelines. But if I want to update my nerdy friends on my video game creation status I should be able to use xhtml 1.1 with non-dialup friendly items on it. For I know my viewers, and they all have fast connections.
In short, there are no global guidelines for web-design; know your viewers.
Well actually, that is just my view. I design with w3c in mind with xhtml 1.1 and css2 (meaning no tables for layout and things of the sort).
I would agree that you shouldn't use a ton of unnessesary code. However, I want to use the fullest extent of technology, I don't want to keep the 800x600 Dialup IE5 people in mind!
I would like your input.