Any chance for a feature to view the website how another account rank would view it?

Right now I have a 'testing' account for each rank level that I login and view the site with every time I make a layout change.

Having the ability to view the website as another rank would be a welcomed feature. Would also add a sense of more security as a bunch of dummy accounts wouldn't be needed. It's really easy to change something and not know it, especially when editting/adding new ranks.

Maybe a dropdown list on the main page for Admins that lists the ranks and will swap the views when selecting another rank?