The new Kapitän's styling reminds me of that for Chrysler's 1953 Plymouth line, an example of which is in the photo above. Imagine a stretched Plymouth and focus on the front half: oddly similar to the '54 Kapitän, as can be seen below. So its looks were already a little unfashionable when it was launched.
For me, the problem is with the main fender line. It starts out decently enough at the front and continues almost horizontally beyond the doors, at which point it curves downward to the lower edge of the body. My complaint is with this curve. The rounding of the fender panel contrasts with the comparatively flat surface of the "fin" near where they joint. This gives the "fin" its tacked-on appearance.
A better solution would have been to extend the fender line to the ear of the car, eliminating the downward curve. This extension could have been used as the lower base of the tail lights, creating a more integrated rear-end appearance.