I personally think this is a great investment in Germany which could have far reaching benefits throughout the rest of the region. The first action of course should be to implement a responsible, safe speed limit. Have you seen how fast some guys are careening around some of those sweepers and blind corners? It's supposed to be a nice countryside roadway through the forests of Germany, not some madman's "race course". Some guys actually try to set records around the 'track'... insanity.
As the Europeans see the error of their not having set a speed limit sooner, perhaps the road could see further commercial investment. I guess there's an old roller coaster somewhere in there? Get that running again. Drive traffic and expand. I'm sure McDonald's has been chomping at the bit to get a franchise in there. It could be a destination! "I visited Nordschleife and all I got was this shirt" tees for the family.
Looking forward to turning that place around.