My preference would be R,B,G & H,S,B sliders under specific paint types, Metallic, Acrylic, etc;. previewing the whole car rotating under lighting, to the system we have, if I could pin it down to the numbers then I could match any color in the world.
Exactly. With a color wheel and sliders, you don't need paint chips from a manufacturer. You can match it yourself.
That's what makes the continued use of paint chips worrying.