A sub forum would be ace as a start! I disagree about the definitions of the other systems (as it is the end user who really defines what any given Ouya or related device actually is, regardless of its title), so I think that many of them are fair game.

I am sure many of us here are owners of some of the ones I've mentioned (or will be soon).

Perhaps something like:

Main sub forum: Other Mobile TV Devices
Sub:
- Microconsoles (Mojo, Fire TV, Gamestick, Shield, Wikipad, Moga, etc)
- Media Players (Google Tv, Chromecast, etc)
- HDMI Sticks/Dongles (Android PC's, Chromecast, etc)
- Non-Android Mobile Devices for TV's and Monitors (Apple TV, Rolu, etc).

I think that this could be a cool thing.