I have been involved in these philosophical discussions before and came to the conclusion that you can't please all of the people all of the time. I admit I did not follow Brian's build thread but will probably go back and look at it when I can find some time. I think the execution was excellent. The flares, stance, and the paint to name a few.
Mark's Camaro is the benchmark in my opinion. It can rip your throat out as well as idle through rush hour without incident. (not that you would want to, but sometimes it just happens) I dream of being in a position to own one of his cars someday. Charley can't buy em all forever.
For these two guys to be that close to Danny in the C6 speaks volumes for the cars, preparation and their drivers.
Bottom line is I enjoy participating at these events when I can seeing how I measure up to these guys (and girl Mary). The rules will be what accomplishes the organizer's goals, but "run whatcha brung" (within reason) is what makes these things cool. They don't have to make a wagon class for Parkhurst, he gets satisfaction from beating smaller, lighter cars that, on paper, should be faster.
You can't please everybody. Don't mess with a good thing.