Originally posted by GeneV Does subsampling result in the need for multiple sensors for color fidelity?
No, it just leads to aliasing artifacts, color moiré, flicker and noise. Multiple sensors would cure some but not all of these problems and AFAIK, multiple sensors aren't exactly feasible for large high resolution sensors.
I agree that the SLR form factor isn't ideal for video. I think the road Sony is following for their E-mount (one mount, one sensor, one lens, but separate bodies optimized for still and moving photos, resp.) are the way to go. Over time and with lessons learned, both could merge into a single hybrid body.