This would be much more restrictive that what is proposed, because usually you would add `defer` statements as you go in a block, when you allocate more resources for example.

Also usually you should be able to have several actions,

  defer { 
    one; 
    two; 
  }

And the bounding in the proposed feature is sane, I think, it is the surrounding compound statement (AKA `{ ... }` block).