It will never be what it was back in the day (pre 2002). The scene is a fraction of what it was, the manufacturers have dissolved, and what is left is:
1.) Bottom Feeders with junk cars
2.) Good Niche Markets (EVO Guys, Miata Guys, STance Guys, Etc.)
It was huge back in the day, but most have moved on to other things. There simply isn't a financial pull that was there 10-15 years ago. The economy is soft, gas is nuts, and cops/emissions/laws/overpriced parts/junk China parts make it too much of a hassle to be worth the effort. Besides, when the NOPI show was huge, it was the only show of its kind/caliber. Now there are Drift events, SCCA/NASA events, and dozens of others. I simply don't see it taking off, but I can respect the effort to some degree. The money just isnt there.