What would a Google Gaming Console need to be successful?
Assuming the rumors are true, of course.
For my part I think the sensible thing would be to have a single device as opposed to the two devices that are rumored. A revamped, Android based, Nexus Q with gaming capabilities along with Play Store integration would, I think, be better than two separate devices.
But such a device would need to do more than just run Play Store apps/games on a TV, there needs to be games specifically developed for it, so Google would need to talk with top developers (think Rockstar, Square-Enix, EA, etc) to get them to port their titles to Android and more specifically, to their console.
I think integration with Google Glass as well as Google+ (along with the new Play Services for social gaming) should be included as well as the ability to pair your own smartphones to the device to use as a controller for some games (think the Chrome experiments Google has done). Integration with Google Play Music/Movies as well as Netflix is very much a no brainer.
The ability to run emulators and games of any kind of console is definitely a plus on Android which will come as an added bonus of this console as well as the ability to use apps to pair third party controllers.
As far as the technical specs go, this would depend, I think, on whether this console aims at the hardcore and high end gaming crowd or the casual gamer which is the main target of smartphone and tablet based gaming. A large hard drive (think 80GB or more) for storing game data is needed as well as good graphic card and enough RAM to be able to run something like, say, Mass Effect Infiltrator or Grand Theft Auto on HD. But including said spects won't make the console too cheap.
So, if the rumors are true and Google does have a gaming console in the works, what do you think it would be necessary for it to succeed in the rather crowded gaming market?