When I bought my first DSLR, a T3i, I was so concerned with the weight and size. I thought the smaller it was the more opportunities I would have to carry it and use it.
I found out quickly that once you go to a certain size, a size that can no longer fit into your pocket or purse, the size is not that important. So now I just wish I had a 7D because there isn't anywhere I could take my Rebel that I wouldn't be able to take a 7D.
BUT, like a child (and we are all guilty) you can tell a first time DSLR purchaser anything you want, they are still going to buy what makes them feel comfortable, such as size and high megapixels. I would have been so excited for this camera 2 years ago, so I believe there is definitely a market for it, without question.