Yes, I already have 'Auto da fe', and was listening to it recently after a long break. It comes across as very accessible, some of it, at this distance. 'Leichenscri' was always my favourite, but I used to think 'IOU' was way too heavy, 20 years ago. Now I think it's quite interesting!
I agree on this 100%. I prefer IOU over ADF these days.
Leichenschrei of course is their finest hour. Coming from a Metal background, hearing this for the first time was a revelation, never heard anything as disturbing before and crazy if you think how tame Metal and Punk were in comparison at this point in time. I have the re-release with the painting of a lunatic on the cover, coincidentally painted in a psychiatric asylum just 200m away from where I live, at the beginning of the last century.