This is unique to Zaibatsu, as is the setting’s retrogenics technology. Forget cybernetics in the traditional roleplaying game sense; with tech out of date as soon as it leaves the production line, no sucker is going to trade meat for metal if his new arm, say, will be redundant in two months. Now, updating the meat, that’s something else... By the time we build a ‘stronger, faster’ cybernetic arm or leg to replace the real limb, we will undoubtedly be able to regenerate a limb with clone technology. It’s not too far away. The next step is to augment the DNA to grow a stronger limb, and after that use DNA viruses to alter existing limbs.