In reply to Marcus.

While archive pages are now automatically generated and most always just display a list of posts, their content cannot be edited like for regular pages. The query block could fill that gap. For some custom built sites we’ve unregistered “has archive” support for posts, which removes the automatically generated archive templates. This enabled site owners to introduce “category” pages using one or more (in our case custom built) query blocks. They could then layout the page in more ways than just displaying a list of posts, eg. by adding other blocks in between multiple query blocks. Quite nice.