Because many items/scripts/embeds do not render on Preview Mode many of us use the subdomain publishing feature to preview a more accurate view. Currently, there's no way to get to the page you are working on published mode. The only quick link on the top right publishing area always directs to the home page and then you have to make it all the way to the page you want to view.
This is madness when working with dozens of pages and folders and trying to remember paths.
I suggest a link/button right next to the Preview(eye button) and/or a shortcut/command to view the current page you are editing in published mode in a snap.