TT makes a lot of things possible
Strong points of CDProject Cyberpunk writing team at least, understanding of mature subjects, interested about real life, dare to take risks to solve problems. That enables going into subjects like compassion, empathy and ethics. May appear simple at first but there might be angle from comfort zones in certain structures to selling robots. CDProject can also just kinda set some things here and there.
Trauma Team DLC could enable us to see life in their hospitals, I don't know really anything about those. In hospitals player can learn about the life of ultrarich, other important people whom can afford TT to begin with. Overheard conversations, direct dialogue... why would ultrarich talk with a nurse, even after saving their life?
Action, recovering patient from various areas around city, fighting different gangs or corporate mercenaries. Latter could have drone and/or droid support. Squad AI? two supports stay in ambulance, one with player character, like Jackie.
What engine can do? Ambulance chase mission, patient is in moving car. Criminals stuffed body in trunk and are moving away from city to dump and possibly destroy the body.
Volunteer work could give some picture about lives of common people in the Night City. Dependency creating issues. Someone has his arm malfunctioning, needed it to perform certain job, employer went under, his arm is also obsolete now. No money for ripperdoc to fix or upgrade due unemployment (natural arm would just heal). Just background chatter or something more?