Transparent status bars and new lock screens weren't the only new additions that came with the Galaxy S3 KitKat update. Along with better battery life and a smoother user experience, we got a new toggles design and recent apps menu. Of course, Samsung's infinite wisdom left these two aesthetic features hidden away. Luckily, with root, you can easily enable them with just a few quick edits.
Samsung bucked the trend and threw hard keys onto the Galaxy S3 while most manufacturers are going the soft key route. This hack will add on-screen buttons to your TouchWiz-based ROM. You'll need a root file manager with a system writable text editor—I recommend ES File Explorer for this, but feel free to use whatever you want. If using ES, hit Menu, Settings, go down to Root Settings, and check Root Exploerer, Up to Root, and Mount File System.