Crossing my fingers this ends up working as an example of building a car to a certain attainable level without being too prescriptive. Guessing my tastes are too off the wall to be among the cars for this class, but getting away from the idea that a street driven car should be built to SCCA rules first and the owner's preferences to a distant second after that seems like a win.
Pure race cars need to be built to a rulebook. Cars that are used for competition, ice cream runs, daydreaming, and general joy-of-ownership maybe less so? Or at least the rulebook could be more useful if it accommodated that prioritization. (Yes, I am enthusiastic about XS)
Getting that part right is a good start. Figuring out how to maintain it without just saying "well, that was a successful couple of seasons but now there's a ringer. Guess we'll go back to the drawing board and start talking about a new class in a couple of years..." is the tricky but important bit.
Most regulatory systems are complicated. I think people are often too quick to say yes/no/all/none/"chuck it out and try a new one."
Bracket racing with corners? Computationally advanced individualized PAX based on power/weight/xyz/results? Based on logged data indicating the car's potential?
Sorry, I'm off on one of the topics I think this class hopes to address.