I'm struggling to understand what you ar saying here to the point where I wonder if you've missed the biggest factor for the Ouya which is this.
It's that it's part of a (potentially and to a degree actually) huge Android ecosystem with the same games running on phones, tablets, consoles, Smart TVs, media centers, mini-PCs and netbooks.
1. Many phone tablet games compromise the controls due to the lack of button or stick controllers. They would actually be improved by a gamepad.
2. If a market exists then people will adapt the games to that market. It's not hard to imagine how many touch-only games could be altered in fairly minor to be D-pad friendly.
3. Developers will innovate new approaches to game input if the hardware is out there.
It's that it's part of a (potentially and to a degree actually) huge Android ecosystem with the same games running on phones, tablets, consoles, Smart TVs, media centers, mini-PCs and netbooks.
Doesn't that change things?