I'd say until now most of the jumpy bermy flow on the shore has actually been on untapped secret trails. Yeah the secret trails on the shore have gnarlier features and sections, but in between the gnar they are typically smoother and flowier. (1.) Because they're still soft and loamy (2.) because builders are willing to put the work in when there trails wont be immediately ridden to death.
Yes, this is exactly right. Back in "the day", the natural sections of, for example, Ladies weren't all that much different than they are now (well, other than the bermed bits). The bombed-out gnar comes from erosion and overuse. If anything, the TAP trails are being returned to a state reminiscent of how they rode earlier, but far more sustainable and friendly to the powers that be.
I rode my first NS trails in 1994, by the way. Several years later, I took a decade-long break. I think the trails are better now.
For some reason I ride Grannies once or twice a year, no idea why, and not only have I never seen anyone on it, I haven't even see traces of others' passing. Every year, that "trail" gets more nebulous and overgrown. So where are all the gnar-lovers?
As for Ladies being "too easy": cleaning the whole trail, including the uphill and rooty sections, is challenging, especially when it's wet. Most people push their bikes on the rooty and steep uphill parts and then claim they've done the trail. Nope.