Add Comment Count to Comment Title & Modify Comment Form Defaults

functions.php

add_filter('genesis_title_comments', 'do_shortcode', 20 );
add_filter('genesis_title_comments', 'lunarwp_add_comment_total_to_comment_title', 10, 1);
/**
 * Add the comment count to the title
 *
 * @since  1.0.0
 * 
 * @param string $title
 * @return string  			Amended comment title
 */
function lunarwp_add_comment_total_to_comment_title($title)
{
	return str_replace('<h3>Comments', '<h3>[post_comments]', $title);
}

add_filter('comment_form_defaults', 'lunarwp_modify_comment_form_defaults');
/**
 * Modify the Comment Form Defaults
 *
 * @since  1.0.0
 * 
 * @param  array $args
 * @return array  		Amended comment args
 */
function lunarwp_modify_comment_form_defaults($args)
{
	$args['title_reply'] = 'Speak Your Mind';
	return $args;
}