Document based apps have all kept the title and document icon.
With the half-exception of Safari [which had the 'fold heirarchy'], the apps that have lost the standard title bar never had these features, and what has been removed is simply the restating things visible in the menu-bar and source list.
With the half-exception of Safari [which had the 'fold heirarchy'], the apps that have lost the standard title bar never had these features, and what has been removed is simply the restating things visible in the menu-bar and source list.