Would be awesome to incorporate the phone.app thats on the iPhone which includes a dialer, contacts, favorites, all in one. I love the continuity feature of using my mac to make and receive calls. But what if we make a call that requires the dial pad to access menus and stuff? There's no way to do that on OS X. Would love to somehow see iMessage/Facetime/Contacts/Phone being rolled up into one app for OS X.