One thing I thought you would like is it eliminates all of the safari related clutter around the window. Second, when I log when I enter a site, if a login is required, it just happens. And no matter where I leave the app when I return, it will be at the same page and spot on the page that I left it. As an interesting sidelight, The associated app on the menu bar is the site, not safari. It does nothing that Safari can’t do, but it makes each open Safari window a standalone app.