mgnl create-component foo --available myHome@main -p /path/to/module

creates a component for the user. As a user I would like to know which pages and which areas are available to me, so I can get started in a fast and efficent way.

Philip suggested a REST API endpoint to list all available areas.

A low tech solution could be to provide link to magnolia system / docs where default areas are listed or simple list an excerpt of default areas.