Please consider adding the functionality to enable 'Take over wp-cron.php' not only for newly create instances (WordPress > Settings > Disable wp-cron.php on all new WordPress installations) but for all existing WP instances at the same time. At the moment the wp-cron.php take over can only be done for one instance at the time. It would really improve the customer expirience if such functionality can be enabled for all existing instances at the same time.