To think, I am the opposite. After owning a 2006 Mustang GT, there is no way I would have considered an updated variant of the S197 platform because of its inherent problems. For those who think the WRX interior is noisy, try owning the S197 for a few years and get back to me. I must have used foam between every plastic part I could think of in my 2006, and I was still discovering new squeaks and rattles every time it cooled off. In fact, I never figured out how to get rid of the constant annoying rattle of the passenger's seat or where the dash pad sat on the AC ducts, despite placing foam between the dash and the AC ducts.
Oh, and I hope Ford addressed the problems with the front strut mounts and rear lower control arms. If not, the OP will find out soon enough what I am talking about. One more question, did Ford figure out how to tame the rear end induced bump steer when encountering potholes or severely uneven surfaces in curves or turns? I put a lot of money into my suspension and that was one thing that absolutely drove me nuts because I couldn't stop it no matter how hard I tried.