Perhaps they could prevent legal extradition to the mainland? I think that people in Japan, South Korea and most importantly Taiwan watch what is going on. China has all the cards to play, but they will hurt their soft power if they are too draconian.
Haven't they accomplished that already?
So no :)
The government can propose bills. So even if they fully withdraw the current bill you can never have certainty that there won't be a similar bill proposed in the future.
Therefore I think that they have achieved all they could about this issue.
Previously, Lam suspended the bill amid mass protests, saying it will expire next July when the Legislative Council’s current term ends. But protesters have continued to demand the plan be axed completely.
https://www.hongkongfp.com/2019/07/09/hong-kongs-carrie-lam-...
So the modern day concentration camps aren't at the line of being too draconian? Either we really have an issue recognizing modern day genocide or our modern day society is far more tolerant of draconian action than your comment implies.