That would be interesting.I hope they improve the camera even more, it is the best camera atm, a great idea would be to put two sensor for two different light scenarios.
23MP with f2.0 or f1.9 for causual everyday shooting and 16MP with F1.7 or F1.6 of course with larger pixels and both shall include dual pixel, that would be perfect but not so doable, of course not on the Note 6.
What they could improve on both S7 and Note 6 is the post proccessing, although they ninja improved it in last update.
A camera with a higher MP count for daylight shooting and a secondary camera with a lower MP count plus larger pixels and a wider aperture for low-light.
TBH, I'd prefer seeing a camera that performs astonishingly well in both scenarios using only a single camera package, but I think we're not there yet. Still, the camera on the S7 is great. One of the best I've used so far.