Why is the reference domain picker considered the preferred option for domain selection?

The reference domain picker is favored for domain selection primarily because it enhances user experience by improving performance and efficiency. When using this tool, pages load faster as it selectively loads only the required domains rather than all domains at once. This approach significantly reduces loading times, especially in environments with a large number of domains, optimizing the system's responsiveness and making it easier for users to navigate through relevant options without unnecessary delays.

The focus on performance ensures that users can work efficiently without being bogged down by loading times, which may occur with other selection methods that attempt to display all available domains simultaneously. This feature is particularly beneficial in a service provider context, where time and efficiency are critical.