I'd rather have higher quality capabilities then extra pixels. I've heard of new technologies in developement that would allow multi-focus shots (this actually uses more pixels then standard cameras; lol) which would prevent taking out of focus shots forever. Also, though the rovers on Mars use very few pixels as compared to the camera that we use today, each pixel, in essence, has it's own lens and via processing techniques, the images are equivalent to our vision which I thought was cool. Maybe a better way of utilizing each pixel (not really talking about Fovean, but that is cool technology in its own right) to the best of its capabilites would be the way to go. Don't think I would splurge on the type of camera that the rovers use though, so Mega amounts of pixels is going to be the norm for a long time.