In reply to Dave Loodts.

I am not completely on board with FSE yet myself. However, I did want to touch on this:

About full-site editing: i don’t believe in this feature (yet). Mostly because of the header. For basic sites with basic navigation that would be OK. But out of the box, WordPress never ever will come close to the options that WPAstra of Kadence Theme have. So, i don’t see the point to invest so much time in here.

If done right, WP could make "header" design much better. I envision themes coming packaged with multiple plug-n-play headers. Whether that's through the template part or pattern system, I don't know. However, this could make things simpler for end-users in the long run.

Imagine going into the site editor, clicking on the header area, and selecting from a dozen different header patterns/templates that best suits your site. Then, just making adjustments as needed.