This is what I was hoping Hangouts would be, almost. There's a couple things there I wouldn't expect Google to do, and that I wouldn't miss too much. But you're right, Apple is close and I just wanted Google to do exactly what they've done, without the complaints people have with syncing (which is something Google are awesome at anyway) and across devices. They came so close, but lack of SMS means it's not really uniting anything. It's just another option for a way to communicate with some, but not all people. So close, but so far.