> Once they learn the 2000 joyo, pass N1, and probably do some tertiary education in Japan, then maybe they can choose to move that direction
For the vast majority of people (including native speakers), knowing a few extra kanji outside of joyo brings very little benefit.
Most natives get by just fine by having a very rough understanding of even joyo [1], thanks to smartphones and computers.
Improving pitch accent, on the other hand, does change how you are perceived by natives [2], so it may be worth a try if your goal is to get closer to native speakers.
For the vast majority of people (including native speakers), knowing a few extra kanji outside of joyo brings very little benefit.
Most natives get by just fine by having a very rough understanding of even joyo [1], thanks to smartphones and computers.
Improving pitch accent, on the other hand, does change how you are perceived by natives [2], so it may be worth a try if your goal is to get closer to native speakers.
[1] https://www.youtube.com/watch?v=sJNxPRBvRQg
[2] https://www.youtube.com/watch?v=QHQcHSaj-c4