" a bit more than that" meaning....what would you like to them to do in terms of "responsibility"?
Also, Humanity Loss is very much in already. That's the cause of Cyberpsychosis, that and Technoshock. The cyberpsychosis that Max-Tac deals with.
Humanity Loss is also an important CP2020 idea, as it crystallizes the idea of our technology making us less than we were. Or more capable, if you prefer, but less human. Is it a perceived psychosis or an allergic response to cyber or a culturally-induced phobia? These questions make up a BIG part of Cyberpunk 2020.
The mental challenges of being a quadriplegic are many and varied and mostly horrible, but I wouldn't say that they are immune to cyberpsychosis in 2020, no.
It's also necessary as a limiting factor to cyber. Everything has a price - you want to swap the meat for metal, you pay the price. And i don't mean mere euro, chombatta.
I just hope humanity and humanity loss are a mechanic of which the player can be aware of (checking stats and such) but I also hope that the writing of the game goes as cheap as to have corporations or scientists use such a vague term as humanity or saying "this piece of cyber carries a lower humanity loss than the competence's".
Humanity being lost should be something that anacronysms say: old people, bigots... but it should take many forms, there could be many interpretations to what humanity and humanity loss represents:
maybe someone that has got a lot of cyber can be harsh to people because he/she's all for performance and results and he or she doesn't see the logical reason to remain flesh... because be it a good or a bad thing, humans (and maybe it's us being animals, and not just humans) aren't always driven by cold logic, that's why it scares us when someone reaches an "easy" solution to a human problem, or it is simply important for us, even if we're wrong. Maybe you replaced that part of you where you had a birthmark, scar, tattoo that held emotional (not logical) importance. Maybe it's a moment when you couldn't control the grip of your cyber hand. Maybe it's the feeling that your brain is encased in a doll body, not the one you were born in.
I'm cool with the rules in datafortress2020 that have humanity loss 0 for limbs/structures analogue to those a normal human has, replacement limbs mainly. You know, as long as one isn't too eager to rip is functioning arms/legs to get cybered up... but maybe that would complicate the rules too much having to track the history of your libs, or maybe it wouldn't, what the fuck do I know?
Also, be easy with the relationship humanity = mental health. I'm okay with having loss of the first trigger the appearance of mental disorders but specially if some of these disorders have a real life parallel... maybe have them as traits/disadvantages for people with no humanity loss? Maybe at least in the PnP (maybe that has already been adressed)? One thing is being a psychopath or being devoid of empathy, but there's things like schyzophrenia, depression, bi-polar disorder... yes, they could be triggered by cybernetics, but also by other means. I think I made it clear despite myself.
Also-also, isn't there some way to regain lost humanity with therapy in CP2020?