Why would this be disappointing? Do you want a big "chin"? Looking at the current iMac, the MBP, the Cube, the Mini, I would say Apple is definitely tending towards the most simplistic, although somewhat utilitarian, design. But that's what I love about Mac. If they can make that happen, then why not? If they can make that happen, what would you want them to add to make it "look better".
I want the most simple design with everything packed in and out of sight. If this were the new iMac, I would stand up and cheer for Apple. I think it would be a great achievement.