I would prefer to stick with the HTML5 landmarks and add aria-label attributes where needed to distinguish between them if needed. This will be done in GP 3.1.0.
I agree, Tom. HTML5 landmarks will work just fine, however we need to make sure the landmarks contain everything on the page. For instance, right now the <header> is wrapped in a div container.
This would likely be very hard to achieve without affecting/breaking existing sites, but we’ll do our best. At the very least we’ll be adding more aria-label attributes throughout to make things easier on screen readers.