I just thought I'd point this out...
The other day when I was driving home from work, I ended up behind a CTS and the color looked great in the sun. The closer I got, I was like "wow, I love that metallic sparkle... looks great!".... then closer... then closer... then I finally noticed that this car had the backup sensors on the bumper. But from a little ways back, it was barely even noticeable! Those sensors are so much smaller than the ones on my Fusion... they were body-colored, flush, and barely stood out until you were actually looking for them.
Needless to say, I hope they are this "disguised" when they arrive on the Camaros, because that was quite impressive compared to others that I've seen!
So I think that we will all be surprised when it's not as bad as we expected.
And if GM adding this feature is a deal-breaker for you, then you should be looking elsewhere for a car... Such as the old used car lots, for something a little more cave-man-esque, instead of a modern car