Just have to +1 the 'holy crap, ASW9 is gonna be INSANE!' sentiment..
But I was finally sitting down to watch Mystery Vortex in full (rather than skimming the highlights), and I heard this:
"I really enjoy looking the [PWG] fans during the matches, and seeing how happy they are at the tremendous wrestling they see... I do that at other places, and I never see...fans this happy" - Kevin Steen, commentary on Strong/Edwards vs. Young Bucks during Mystery Vortex
It's a self-sustaining cycle, I think. They put on amazing shows, so the fans love coming to PWG, so they cheer and chant and such, so the wrestlers love all the energy and put on amazing matches, so the fans love coming, and so on..