The problem with that is that 20 cases can become 100 cases literally overnight. See definition of "exponential".
A national framework defining a "hotspot " may go some way to helping the situation, but then the problem becomes one of enforcement.
Case in point with VIC.
Toughest and earliest but let down by enforcement of said measures.
Personally, I'm all for using the same measures as Taiwan.
But the time to move on that was Dec.31 2019, like Taiwan.