[Bug 7143] New: "attributes marked with an asterisk cannot be specified on body elements" is confusing, since <body onload=""> is pretty common. Of course that's the attribute specified on a tag, but still, I'm just a simple author reading the spec for the first time :)
[Bug 7144] New: I am not sure if we are ditching ALT in favour of legend. You don't make this clear here. Some of your alt examples here resemble longdesc, which I am in favour of ditching completely. I'd be interested to see your answer on whatwg list about this