PS - I don't have tons of before and after scans laying around, so the pics in 2) above would be cropped HA pics without wedges.
I think this might actually be a good thing, since a lot of people are a little shy about their grading abilities. In other words, this game has a LOT of guessing involved (you are viewing the book through the case), AND it's timed. And, obviously, as we all know, you can't ACTUALLY grade a book without having it 'in hand.' So this game is just for fun, and no one should be shy about posting a grade.