New comment_form_after_textarea action.

[pross]

Adding a new action into comment_form() to make it easier to add simple captcha above the submit button.

[SergeyBiryukov]

Related: #27080

You can use comment_form_defaults filter to prepend your text to $args['comment_notes_after']:

function comment_form_after_comment_26395( $defaults ) {
	$defaults['comment_notes_after'] = '<p>your content</p>' . $defaults['comment_notes_after'];
	return $defaults;
}
add_filter( 'comment_form_defaults', 'comment_form_after_comment_26395' );

[rachelbaker]

In addition to the comment_form_defaults filter mentioned by @SergeyBiryukov, there is also 2 actions for users that aren't logged in:
do_action( 'comment_form_before_fields' );
do_action( 'comment_form_after_fields' );

Recommending this request be closed as a wontfix.

[DrewAPicture]

I agree with @rachelbaker, existing hooks provide ample enough flexibility. Closing as wontfix.