> Ideally, the features needed for writing bigger codes should be optional.

Newer languages like Rust, Swift and arguably Carbon don't make programming-in-the-large features "optional"; they make them as lean as possible, so that users can more easily apply them at the outset compared to older languages like Java/C#. That way even a screenful-length trivial script can potentially grow into a larger system without becoming unmaintainable in the process.