The Ghost dashboard is pretty... for a blogging platform. That doesn't mean it's right for WordPress. To me, the key to a WordPress Dashboard is a) deciding if one is necessary at all, b) ensuring if one does exist that it's extremely flexible for adding and removing elements to it, for specific user AND globally. A flexible methodology for doing so is key to making it work. Not to mention removing useless fluff items that are in there now (most of them)