The mix would be great if Google wouldn't halfass it and made it like iMessage. If user is on Hangouts and online, send Hangout message. If not online/not on Ha

The mix would be great if Google wouldn't halfass it and made it like iMessage. If user is on Hangouts and online, send Hangout message. If not online/not on Hangouts, send SMS/MMS. How hard can it be?