In fairness, you have to look at how standards get somewhere - this is an editor's draft which is a starting point of an idea rather than a done deal. Don't be surprised if the final product winds up being significantly different than this - even better, get involved in the conversation to make it what we need. That's not to pour cold water on it: It's good as it is, but there are changes which potentially help explain the magic of participating in form encoding and submission which may be better and allow more adaptation and experimentation over time.