Maybe it's just the engineer in me, but I thought that's what the word 'draft' means. Incomplete to the point it should ONLY be used for testing purposes and not for production use. Or for the dictionary version: "a first or preliminary form of any writing, subject to revision, copying, etc."
Subject to revision makes it unsuitable for production use - end of story. That it's not even supported for over 50% of the public (probably more than that real world given FF's artificially inflated numbers, thanks prefetch!) and much of it does NOT degrade gracefully (reliance on multiple backgrounds) or does stuff that the suits will ask "well why the hell can't IE do this? I've seen existing sites do this in IE..."
It's not a good recipe for success.
NOT that anyone seems to be paying the least attention to what draft, alpha or beta mean anymore.
Though that could be my complete distaste for everything HTML 5 except the new form handling speaking, since if you are just talking markup it's a step BACKWARDS in progress from everything STRICT gave us.