Support for non-author roles?

Hi,

Thanks for this wonderful plugin. It works flawlessly!

I’ve a workflow where users are registered as subscribers and then I use this snippet to show them in the Post Author dropdown:

add_filter( 'wp_dropdown_users_args', 'add_subscribers_to_dropdown', 10, 2 );
function add_subscribers_to_dropdown( $query_args, $r ) {

    $query_args['who'] = '';
    return $query_args;

}
add_filter( 'rest_user_query', function( $args, $r ) {
	if( isset( $args['who'] ) && 'authors' == $args['who'] ) {
		$args['who'] = 'subscribers';
	}
	return $args;
}, 10, 2 );

In this case, how can I make your plugin perform automatic update of the user slug to a hash? Actually, I want every user account created on the website to be hashed, be it an author, a shop manager, or any other role.

Thanks

Kind regards,