@Grampy
The wired 3D google you described was in fact made into a game goggle by Sega for the Master System. This was released in 1987 I believe. I am sure the new 3D glasses you described are much better, but the technical principle is the same as that used by the Sega 3D-Glasses. Human sees 3D because each eye sees a slightly different angle of the same image. To simulate this 3D perception, some electronic 3D goggles has builtin shutter in the lenses. The lenses then alternate quickly (shut and open) in sync with the screen display to fool the eyes into the seeing two images on the same screen.
Below: picture of the SegaScope 3D for the 8bit Master System.
There were around a dozen 3D games for the Master system. Most played well and the 3D effect were convincing. However, the refresh rates were not high enough for alternating images to display smoothly (You can't expect much for an 8bit system) resulting in constant lens flickering. After long sessions of play, this could be quite a workout for the eyes.
Another problem with any game devices that make people wear something is that they had not been successful. The Nintendo Power Gloves, The Sega 3D glasses are just two examples.
I can see that Nintendo, as you point out, continue to innovate in the 3D controller space, but I don't see them try another 3D goggle any time soon. Unless the technology has matured enough to provide a pleasant 3D experience with out eye strains (with or without glasses).
