I've actually been wondering about this myself. I've been in the, and I'm using the term extremely loosely, "back country" where they are cutting the new trails. The top part is wide open and easily turned into trails, the bottom half however is heavily contoured, rocky, includes some huge boulders and outcrops and the terrain is just not suitable for trail right next to the existing ones. I've had to hike out of that area on a few occasions because I just couldn't get back on a board.
I'm curious whether they will attempt to grade this area or simply reroute the trails around the large knoll in question.