I imagined what she might lose is the ability to handle the sort of rapid motion that Anna could. Yuki's brain limits the amount of input she can process - the technopolitan interface probably queued it somehow like a computer helps you multitask. She'll operate perfectly normal, still beyond human, but she might not be able to keep up with Speed Machine from the Machine Shop, for instance.

Anna would, though, and because her computer brain is different, it's much more difficult to take that ability away from her.





The human-brain-computer interface is pretty much the reason. Anna and Hallie can get bodies like Yuki's made, but because they can control it directly. Yuki is a prototype; which really hasn't been viable for duplication yet because it's way too expensive (especially because each one would be custom made), the parts are way too scarce, and because even after all that money and time, maybe a small percentage of people can even drive it successfully. A multimillion dollar body that enables you to look more stylish sitting in a wheelchair is useless.

How's that for a reason?





Yeah, by now her brain has figured out how to operate much of the controls on her own.








Most of Yuki's upgrades were driven by her being sick of the same thing happening to her multiple times.