Design wise, it's not my cup of tea at all. What counts is how it drives, steers, comfort, finishing quality and price.
I've recently saw pictures of some quality problems found in the show car at the recent Detroit Auto Show. Not a lot of but the leather was not nicely wrapped, there's a noticeable gap on the air vent on the dashboard and the stitches aren't consistent on the dashboard. I know it's just a show car but that's the car you use to impress the customers. They said that they wanted to be a competitor to those European giants like the 3 Series, A4 and C-Class but they need to come up with something that has the same or better quality for lower price than the Europeans. Another thing is the iDrive equivalent to the ATS. The UI looks too simple and outdated compared to the Europeans.
Cadillac have made a step closer, it's no doubt a good car but they need to be even closer to support the statement of challenging the Europeans.
EDIT: I found some pictures.
And if anyone doesn't know, there's a compartment behind the center dashboard.