Ortofon SPU's outdated design?

Hi folks, I wonder if the Ortofon SPU's are in fact living fossils: they weight 30+ grams each! 40 years ago maybe it was a necessity but today? Average cartridge mass is nowadays between 8-12 grams. Headshell mass is usually between 9-12 grams. I know there are still fans of this carts but they are far from being "universally applicable", in fact tonearm/cartridge matching is more difficult than with the Denon 103. I wonder if the SPU's sound totally different if Ortofon would reduce their mass to 20+ grams (including integrated headshell).

Chris