I never said that I didn't see it, just that it wasn't a big deal because it would go away on its own. I usually have the MBPs in my possession for a day or two, installing apps and transferring data, so the screens are always on full. As a rule, I turn off power management until imaging is done and use Casper for the imaging.
If it makes you all feel better, my first gen iPad did this, usually with the Safari toolbar, and it went away on its own if I changed the screen to something else. My current iPad (3) does it as well.
Honestly man, I truly don't see this as an issue unless it is affecting your workflow. Some people see a dead or stuck pixel as a problem but just about every computer I've owned has had one or two.
Buy it, use it, enjoy it for what it is, not what you want it to be. 🙂
Cheers.