I've never had a huge issue with the difference in appearance. One was assembled by a stylist, the other by a teenager putting together 200 of them in a shift. As long as what I asked for is in there, and what I didn't ask for isn't, and it's generally piled vertically, I'm good. Nice bit of PR on McD's part though... this is very seldom directly addressed by the food industry.
Now to find lunch...