This is actually a broader pondering.
It seems that having external hardware flies in the face of the overall desire to cut the cord. But even when a full android system fits in something that can plug directly into the side of a tv?
This is of primary importance to people who want a tv, and *only* a tv, in their living room. I know of many people trying to live within a streaming-only environment, would love something on the wall (with only power to worry about) that doesn't have the thicker bulk of even apple-tv behind it.
This one for instance
the MK802 Android Mini PC
has an HDMI port, wifi, Android 4.mumble, etc., and according to this reviewer on youtube
it might be powerable from the USB interface. This would mean that the latest app engine, streamer, etc., could well stick on the back of the tv self powered, plugged into the usb & hdmi.
It would also free people from the endless urge to upgrade, of course, but that's doable from any external hardware.
Heck, it comes with Angry Birds, and I don't see how it would have any services blocked to it (???), because it would sit as a standard android device on your network, not a google tv.
Toy or useful?