I have both SGS3 and Nexus 7. I find them both very useful in different use case senario. What I would love to see is if Google can make the next gen Nexus 7 into a phone. That way I don't have to carry both devices at the same time.
Yes, I'm going to make phone call holding a 7" to my face, I'm already doing it when I have wifi.
Yes, it can easily fit into my pockets, jeans, work trouser, coat and light jacket pockets. It's one of the first requirement when I got Nexus 7, pocketable, don't want to carry a man purse.