Well, Chilibowl, it is a pseudo-street circuit, kind of like Singapore, though maybe more akin to Baku or Sochi. So yeah, I'm not surprised the track is rather flat. However, the racing surface itself doesn't seem to be unduly narrow.
Yes, it's a familiar pattern in a number of places, and I think the setups for some of the "straights" are going to hose up overtaking significantly. It seems to be a warning sign the more talk there is about how a track is supposed to be "challenging" for drivers.
SBF, speaking of Turn 1 at Oschersleben:
https://www.youtube.com/watch?v=QdCDkfEKkUI
F333SP, the third sector has some sweepers, but most of the rest doesn't look to be that quick in terms of the corners themselves. Also, for instance, I don't really see the point of that extra esse at the exit of the first roundabout; it seems like a great way to spread the cars out more, and hence mess up overtaking at the end of the following stretch, into the second roundabout.
Here's a straight YouTube link to the video, for anyone whose browser doesn't seem to like the motorsport site as much:
https://www.youtube.com/watch?v=uPtbo5UIZFA