Hello, I'm a casual F1 fan, but I'm leaving my role as a lurker of F1 forums because of this news about the NJ Grand Prix. I live very close to the circuit, only a few blocks away in fact. My house is actually in the satellite picture posted earlier. Since I've lived here my entire life, I've also spent a most of that life both having been driven and driving myself through these very streets that will be used as part of the circuit. I've been hearing about this from my father for a while now (he is the true fan, like I said before, I'm only a casual fan, thought that would change if I get to see one live). Good thing I stayed in the area for college.

Anyway, I've seen some negativity about this news, understandable since street races haven't been well done in recent times. However, that doesn't mean all street circuits would have to necessarily be that way. I do believe this is a very different from the disliked races like Valencia. The main difference is the elevation. Some places have described this as a mix of Spa and Monaco. It's hard to think how a combination of the two would look like, but that description does not seem far from the truth to me.
This portion of New Jersey is called the NJ Palisades. The United States is known for its extremely low lying elevations, but this area is an extreme exception. There are some hilly, rocky section of coastline on the east coast, but I believe this is only place in the country, other than San Francisco, where high density construction was made on such a rough section of the coast. The result is that the lower portion of the circuit, nearly at level with the Hudson River, is significantly lower than the higher portion. The height is over 300 feet (or close to 100 meters, possibly 100+), so that how much of a climb there will be from Port Imperial Boulevard, up the bridge to JFK Boulevard East. Even JKF Boulevard East is fairly uneven and bumpy.
Here is a video of the course:
http://www.youtube.com/watch?v=Bxvbfm8P47YThough even in the video, the elevation isn't as noticeable as when you're there in person. It will be when the cars are racing through it. I'm assuming the longer upward sections are where the comparison to Spa come in, and the elevated turns are similar to Monaco. In fact, this track might be receiving more critiques for being fairly unsafe rather than being boring.
Also, the views of New York are stunning from JFK Boulevard East, possibly better than anywhere else, even Jersey City, which is where some classic pictures of NYC are taken from.