Buy one for each room, obviously.
I don't see the point yet, since it doesn't have an awareness of local resources or content and doesn't integrate with anyone else's cloud services. That thing would be really powerful if it understood files on network drives. I'd love to be able to say "print out a copy of the malware cleaning document."
As an added bonus, something that understands moving stuff between screens would be great. Maybe that's a feature for a third or fourth-generation FireTV.
I have a huge ongoing frustration with trying to get uniformly perfect media experience, something I could theoretically configure and share with other people. Using a PC with Windows 8+ is great for HTPC-type applications, but desktop browsers suck for Youtube-from-the-couch, there's no decent app-ified version and you lose huge chunks of the feature set you'd have with an Android device. Sites like Vimeo can be even worse. I do think Windows is closer to being just right and in some cases Kodi plugins or Plex channels can make up the difference, but app-ified streaming services are a weird thing for a supposedly touch-friendly OS to get wrong.
Android on the other hand has a generally imperfect experience in Plex (bad GUI, crummy audio support) and Netflix (crappy navigation), has wonky issues with Amazon Instant Video and Hulu, can be laggy even on nice hardware and outside of specific apps like Kodi, doesn't have a UI that's well tuned for a 10' interface. Amazon kind of has its own special wrinkle on all that since it also doesn't license the Google Play framework, so its versions of some things ALSO don't quite work the way they do on licensed Android.
In other words, nothing about this stuff is perfect yet but it's getting a lot better than it was.