As I have pointed out before, I find the map to be a bit empty. Many important villages and towns are missing, details in countryside, things that make the map come alive.
To me it looks like the European equivalent of the Russian steppe. Towns are really nicely done, but there is nothing in between them. I imagine if a pilot would have to crash land in that area irl, he would invariably end up landing in someone's back garden.
I'd like therefore to see more small towns added and farms and villages.
Also the thing that started me on this was the fact that the Lion's Mound south of Brussels was missing, as well as the adjacent town of Waterloo. These are historical landmarks that can be used for orientation.
As for the people saying that the war would have destroyed more things, I say 1st this is not that map but the pristine version I would think, and 2nd that villages would not have been damaged at all unless fighting on the ground had taken place in them.