Hi,
I’ve relied on hooks in the theme a lot. I believe the cornerstone-site-body hook in /cornerstone/includes/classes/common/class-front-end.php is renamed to cornerstone-site. Hence, a call to wp_enqueue_script( 'x-modals', get_stylesheet_directory_uri() . '/js/site/x-modals-extend.js', array('jquery', 'cornerstone-site') ); won’t work anymore. Easy to fix for me, but might not be for everyone. I’ve shared the snippet in this script and it has been referenced by support-staff a few times, so there may be more people around using this hook.
May I suggest to provide a backwards compatible way of renaming hooks, so scripts out there continue to work? Saves support of lot of potential questions 

