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solidONE: stop looking at the rules from your point of view, and look at it from a larger perspective. YOUR springs may not be worth 0.5 seconds, but some springs are.
Most BBK increase rotational intertia. Do we want to give them negative points for that performance detriment?
Sways add weight. Most aftermarket springs are lighter than OEM. Sways don't affect CG. Springs do. There are more factors than just what you're looking at.
Rules will always be changing... don't be afraid of change. Provide evidence that a particular mod is misappropriately classed, and it will be changed.