I'm glad I didn't spoil anyone's fun with the Hoosiers at Sanford, either. I don't have a set of DS legal street tires and needed to run DS for NCAC. Somehow I don't think it would have been very fair to run 225/45/17 S-03's there...
I personally don't see what's broke with the street tire class.
People keep complaining about ringer tires or unrealistic treadwear limits but it seems to me that no matter where you put that limit some tire will be the one to have. Since we match what most other regions do there are a bunch of tires that happen to fit our rules including one that is cheap, available in a wide variety of sizes, and just about the stickiest thing available. (read Azenis!)
--Kevin H.