I wonder if I were to stop at an Apple Store and ask if they'd be able to say how many have been returned for this defect. I'm glad it's an isolated batch, but still, it's just as bad as worrying that you might get a dead pixel.
Speaking of which, my MacBook Air has a weird case of stuck pixel area that I can only see when the background is white. It's so weird, but fortunately it's in a place off to the side that I don't even notice it unless I am looking right at it. If I have a dark background, it disappears. The pixel area is brighter than even solid white so it's like there's an LED behind it running brighter than the screen brightness. It even lowers when I turn down the brightness and goes away when dark.
It's not burn-in but I don't know what it is. So weird.