I know beauty is in the eye of the beholder, to each their own, one mans junk is another mans treasure, and all that, but I totally agree with you.
So much so that when I decided to buy a 'new' Mustang, I picked up a low mileage 2009 last weekend.
IMHO, Ford got the 2005-2009 right and knowing Ford was aware of negative feedback about the new rear design I was hoping they would make some changes for the better. I think they went the wrong direction.... The front looks nice tho'!