One of the things that makes riding on the shore great is the variety of trails, both sanctioned and unsanctioned. While the terrain strongly lends itself to more difficult trails rather than easy ones, there is a trail experience for everyone out there (except maybe huge booters, but they still exist as one-offs). While it might not be NSMBA or MV's mandate to have the best trail network in the world, I believe we just might have it if you take all the trails into account.
One of the issues though is that it seems to me we are running out of room for new trails, and/or have quite a few neglected trails, which I why I recommend adopting an existing trail rather than building a new one. You can really learn a lot by adopting a trail, and can even put your own spin on it. And in my experience land managers are far more tolerant of trail adoption rather than trail contruction.