I'll address them in order. 1. there was a marked discoloration when i saw pictures on the forums, and i almost returned it due to bing scared. When i got it, nothing. Absolutely nothing, though it looked a bit over saturated, which i kinda like on a non-workstation device.
2. The flimsy hinge is not a problem, end of story. Its stiffer than a MBA or MBP,m and only wobbles significantly if you tap it real hard.
3. Battery life is a problem, but if you're like me, i use it in multiple short spurts, coupled with a few long ones. It lasts all day, and while i do wish for a bit more, as for waht it is, it's good. Not great, but good.
4. No backlight bleed, nuff' said.
Furthermore i have found myself using the touchscreen far more than i anticipated. It's hands down, IMHO, the best laptop availible today thats an ultraportable. Go get one.