As for the trend toward organizing content by both topics and the stuff your friends enjoy, you only need to look asfar last year's hit news app: Flipboard, which turns the news into a more visual experience on your iPad, personalizing your experience by highlighting links shared by your online connections and topics you find interesting.
Most complaints thus far have centered on Home's failings as an app launcher -- when you install Home on any phone, it rearranges your apps because there's no folder support and no app dock.