Deny access to view Metatag tokens until we can get token memory consumption under control. For example, in a client project site, this trimmed ~40mb off of PHP memory required to render the node/add/article page and took the total HTML payload from 7.18mb to 43.68kb on another content type. Related Drupal.org issues: <http://drupal.org/node/105…

gistfile1.php

<?php

/**
 * Implements hook_form_alter().
 */
function mymodule_form_alter(&$form, &$form_state, $form_id) {
  if (!empty($form['#node_edit_form']) && !empty($form['metatags'])) {
    $form['metatags']['tokens']['#access'] = FALSE;
  }
  if ($form_id == 'flag_form') {
    $form['messages']['tokens_help']['#access'] = FALSE;
  }
  if ($form_id == 'pathauto_patterns_form') {
    foreach ($form as $key => $value) {
      if (is_array($value) && isset($value['token_help'])) {
        $form[$key]['token_help']['#access'] = FALSE;
      }
    }
  }
  if ($form_id == 'metatag_config_edit_form') {
    $form['metatags']['tokens']['#access'] = FALSE;
  }
}