Comment by SirHound

Yeah I mean you can basically achieve this set up even with frameworks, if you're using stylesheets, but it's the copy/pasting and finding source code that is usually the pain. With this you just press apply (or enable auto-apply) and your agent gets to work. You can also edit the content, add/remove/reorder elements etc, I don't know how good the browser dev tools are at writing all that back though.