After looking at the doc, my first reaction is that all HTML should be schema compliant. Using non-standard HTML in the constructs will screw up a lot of toolin

After looking at the doc, my first reaction is that all HTML should be schema compliant. Using non-standard HTML in the constructs will screw up a lot of tooling and validation. It's also safe to say this is just too big of a change without public commentary. Way too big.