Quote: "Aaaand nobody agrees with you Obese87, for reasons already pointed out in this thread"
You really think it's as simple as plugging one of these into your controller port?

It's a completely different control method, it changes the game entirely. It would be like plugging in a mouse to play Super Mario.
How would you make a mouse compatible with Super Mario? You could make mouse movement correspond to directional movement, but then the player would have to keep moving off to one side, which is no good. So maybe you determine direction by mouse offset from the centre, which works fine but doesn't utilise 99% of the functionality of the mouse.
It's the same story here, games will need to be designed especially for this system for it to be an immersive experience and not just a big foot-operated control pad.
The difficulty in learning is not acquiring new knowledge but relinquishing the old.