I'm extremely picky about displays too and have sent numerous MBPs back to apple for all the different issues of the previous generation MBP: yellowing, uneven backlight, severe bleed and what not. If we want Apple to keep producing good quality products, I'd argue that it is our duty to return poor quality items -- as many times as it take. That's my opinion.
Having said that, I think that with the current TN technology in laptops we're never going to find perfect displays. I recently got the latest MBP unibody and have the 9c84 display -- it is of much better quality than the previous Lg displays but it certainly is not a perfect display. It has considerable uneven illumination that is only visible when viewing films with much black in dark settings but that nonetheless shows off its weaknesses. It also has mediocre viewing angles -- the only MBP display The only MBP I had that had surprisingly good viewing angles had an AUO display that was great but that started inverting after a few weeks. The older Chimei had significant bleed on the left side and some 'pillars' of bleed at the bottom. The current LG has some pillars at the bottom too, but they're faint.
Anyway, these displays are mediocre and that's the state of laptop display technology right now. That doesn't mean that they're not beautiful for non-critical everyday work. I think they are. But they don't even come close to reasonably priced desktop PVA or IPS display and although we can't demand that they should I do think we should demand consistency and the highest quality that exists within the confines of the current technology.
Just because some people here aren't discerning and/or knowledgeable about displays and color doesn't meant that one should jump to conclusions about the 'pickiness' of those who demand what Apple advertises: a display that is suitable for graphics and photo. Even the best of the current crop are only marginally suitable for that purpose and most are not.
