I saw the 46C7000 at Fry's today, took a quick look at it and its user menu. The uniformity looks quite good on it, I didn't see any problems in the corners like the 2009 sets. The backlight can be adjust in 20 steps. In the advanced settings area, I saw some points of interest. There are now 'expert' patterns in there that can be brought up, one for use for adjusting brightness and contrast, the other for adjusting color and tint. The patterns looked very good, like what you would find in good calibration discs. Also, now there is not only a blue-only mode, but red-only and green-only, too. These modes, along with the built in 'expert' color pattern I suspect could be used with the custom color space settings to get as good an adjustment possible without the aid of a calibration instrument.
Back off man, I'm a scientist.