We recommend everyone give this a try. This will become the default in a future release of the CLI. There are some known speed issues with projects with more than a thousand components. We want to be sure projects of all sizes will experience these improvements.
We’ve added support for multiple names for your components / directives. This can be very useful for helping your users to migrate without breaking changes. By exporting a directive with multiple names, you can make new names available in the Angular microsyntax without breaking existing code. This has been used as a part of the Angular Material project in its prefix migration, and can help other component authors as well.