Doug, yes, this has been brought up before. The only reason why I think those bowls wouldn't get clean is because their "face" is so close to the tub wall. But truth be told, I've never had issue with cereals bowls facing like that in my modern dishwashers not getting clean.
Every KA ad I've always seen the top rack have saucers and such facing only toward the door. And that's how I've always loaded dishes when I've had to load saucers and cereal bowls in that row (which I consider a waste of real estate space in the top rack) and have never had things not get clean all facing to the door.
In fact, I've looked through every 15 series on forward brochure and owner's manual I've doanloaded here and they all have saucers and cereal bowls facing toward the door going down the center row of top racks. All facing one direction.