If you want to accomplish this with WP2, try a change such as the following, in which I filtered out anyone at Contributor level or below:
Change line 182 from:
$query = “SELECT ID, user_nicename from $wpdb->users ” . ($exclude_admin ? “WHERE user_login <> ‘admin’ ” : ”) . “ORDER BY display_name”;
To the following:
$query = “SELECT ID, user_nicename from $wpdb->users WHERE id IN (SELECT user_id FROM $wpdb->usermeta WHERE meta_key=’wp_user_level’ AND meta_value > 1) ” . ($exclude_admin ? “AND user_login <> ‘admin’ ” : ”) . “ORDER BY display_name”;
