More pixels would be nice, but more dynamic range would be much more appreciated. I just hope if they do have something good in the works, they at least announce it before my CPS membership expires...
with Canons existing read out more pixels are equivalent to better read out noise at base iso
It actually doesn't matter. The read noise is relative to the total charge. Bigger pixels have a higher maximum charge, and have a proportionally greater read noise, relative to their pixel area. Conversely, smaller pixels have a lower maximum charge, and also have proportionally less read noise, again relative to their pixel area. It doesn't matter if you have 30e- with 65,000e- FWC, or 8e- with 20,000e- FWC...same difference in the end.
If it DID matter, then Canon cameras with APS-C sensors and small pixels would have better DR at low ISO than FF sensors with large pixels. As it stands, the difference between the two is negligible. The problem isn't the pixels themselves...its downstream from the pixels.