ZRH is my home base. I understand, that it is somewhat difficult to understand the german regulation of overflight restrictions, and I do honestly think that the noise for landing over german territory is not so substantial (compared with the T/O's).
Regarding the CDA VOR DME 28: It's a great approach to fly!! We have to toss coins each time about who is allowed to do it. Demanding, keeping your brains sharp, just rising the color of your cheeks to a more intense blush... Hey, wasn't this why we all got into aviation?
Don't get me wrong, I do not think that there are no mistakes possible in contrary. And about ZRH in general: We always take 30' extra if our approach time is after 21.00 LT. The regualtion to use only one RWY for T/O and LDG was stupid enough, but now with the 28! And for my part I don't mind to go slow on 28, being fully configured at OSDAN, leaves you time enough for overview.
Cheers
Av