The problem with adding a cyberpsychosis system that affects the storyline is that you might end up with something like Dishonored, where you are given all these tools but the game penalizes you if you actually use them.
Of course it wouldn't be as bad here since you fan use them, just not the whole kit at once, but I still feel like a lot of people wouldn't like that.
I'm not sure that's the case. Even Dishonored's Chaos mechanic, while not the most inspired, was actually a creative relaxation of Thief's "don't kill people" rule - you
could kill people, but there'd be a price to pay later. And ultimately, the cyberpsychosis mechanic we're discussing would be closer to the slot limitations on cyberware, I don't see a lot of people complaining that there's only one leg slot because, even among general audiences, it's understood that some exclusive choices are part of what makes the game work. So in what we were talking about you could have X total implants but as a soft limit, and you
could go higher but at your own risk. I don't think the concept in and of itself would vex players, the trick would be for devs to correctly balance the limits and the consequences and to communicate them clearly.