Many of these sound awesome. Personally I'd love new skills in base game too, featuring sims preferences and likes a bit. My suggestions:
- Reading (child skill)
- Swimming (children can be taught by a teen or older or go to swimming school (rabbit hole). Adults have basic swimming skills but can improve them).
- Riding a bicycle (Children can be taught this by a teen or older.)
I would also love new Discover University skills that tie in with the different subjects. For example analysing literature skill, business skill or psychology skill, depending on what you are studying. These would then give you different perks in interactions with other sims, or new interactions/actions for your sim.
And I'd also love it if the archaeology skill was tied to a university major and a job.