I was going to stay quiet, but since Bob Bubeck commented, I will also. I have been an American Flyer and S gauge operator, and collector, literally my entire life. There were times that I also had HO and N gauge but I still had the American Flyer. When I started collecting seriously in the early 1980's I traveled a lot for business. I was able to attend at least one, sometimes two train shows a month in different parts of the country. It provided the opportunity to talk with and learn from many of the "old" experts. When I asked about NASG, the feedback was "they are just scale", "there is no benefit for you to join", "they really do not want American Flyer people", and "you would just be wasting your money." I heard this for 25 years, so I never joined.
Starting in 2008 I began adding Lionel TMCC and Legacy items, plus engines and rolling stock from American Models and SHS. NASG does now have a good historical library of high rail items but not really anything for building a layout, operating with Legacy or conversion of AM engines to TMCC/Railsounds.
In 2015 when I was having my layout designed and built NASG had nothing, but fortunately there were a lot of ads in the S Gaugian and in CTT relevant to high rail sources. There was only one source for numbered high rail turnouts, but unfortunately for us he shut down the business before we could place the order. That was our very own Tom Stoltz. However, Tom had excellent videos of his turnouts posted. I had the layout builder watch them, then approved a change order for the layout builder to hand lay turnouts similar to Tom's. Fortunately Tom proved turnouts could be built that allowed both scale and high rail equipment to be used. NASG had nothing useful.
For someone who operates high rail with AC/Legacy/LCS, I see nothing about the organization that would benefit me. I have no plans to use DCC and no plans to use dead rail on the layout.