I lost interest in the NATs after they stopped having the all-forms-of-aeromodleing-together format. I loved watching Dynajet controline speed ships, R/C scale, C Gas FF, stunt, pylon racing... it was all there. You would come as a CL Combat flyer and leave with a new-found interest in HLG, or come to fly R/C pylon racing and get hooked on stunt. Worst thing the Academy of Multirotors and Arfs ever did was to break it up. We no longer present what we do to different modelers and communities.
I'm sure their intentions were good, but the unintended consequences really hurt the hobby, IMHO.