Should block params be allowed in construtors invocations too?

[samuelgoto]

Interesting use case in constructors for Ruby:

https://mixandgo.com/blog/mastering-ruby-blocks-in-less-than-5-minutes

let car = new Car() {
  ::color = 1;
  ::size = "large";
}

Could that lead to something like abstract classes?

sort([2, 3, 1, 4], new Comparator() {
  ::compare do (a, b) {
    return a < b;
  }
})

Are there enough use cases that makes this motivated enough? If so, which are the most compelling ones?