For example if I had the code in a class:

public void method(int var) {
    System.out.println("Value = " + var);
}

and I wanted to change it to this:

public void method(int var) {
    if (var < 10) {
        System.out.println("Value = " + var);
    }
}

my sequence of thought would go (where | is the caret):

1. public void method(int var) {
       if (var < 10) {|
       System.out.println("Value = " + var);
   }

2. public void method(int var) {
       if (var < 10) {
       System.out.println("Value = " + var);|
   }

3. public void method(int var) {
       if (var < 10) {
       System.out.println("Value = " + var);
       |
   }

4. public void method(int var) {
       if (var < 10) {
       System.out.println("Value = " + var);
       }|
   }

5. public void method(int var) {
       if (var < 10) {
           |System.out.println("Value = " + var);
       }
   }

What would be useful is at stage 2->3, when enter is typed, is to have the closing brace inserted by IDEA and the newly created block format itself (the caret is left after the inserted } at the end of the block).

I know this feature is available via the Surround With refactoring but I think doing it this way allows for a more flexible coding style.