Quote: This would be awesome. Foveon clarity without the drawbacks.
This isn't as easy as it seems. Foveon-like technology is still worth pursuing, because that would be the ideal.
In Bayer sensor pattern, RGGB, there are twice as many green pixels as blues and reds. One or two sensor shifts won't help to establish a pure RGB readout in every pixel. Not at all. See the picture below. After two sensor shifts — one left, one up — the situation is like this:
There is still no true RGB pattern recorded in each pixel of the final image, but 50% of them do have it, and other 50% have recorded additional colour too. Which is outstanding, and I'd presume, at some 83% of the performance of the ideal Foveon-like sensor if it had hi-ISO performance of the current top of the line CMOS Bayers (current Foveon implementation can never come close to it).
So will this blow the socks out of current Foveon sensors? Almost for sure, especially after ISO 400. However, even without the complete RGB readout for each pixel, the sensor shift increases the resolution as well, and it could be said that a
sensor-glide-APS-C camera with a Bayer sensor of 20MP can rival the resolution of the current MF 40MP Bayer sensors with no sensor glide tech.