Fancybox as Ubercart image widget

I'd like to suggest to add the following code to fancybox.module in order to make Ubercart to consider Fancybox as a possible image widget:

/**
 * Implementation of hook_uc_image_widget().
 */
function fancybox_uc_image_widget() {
  $widgets = array();

  $widgets['fancybox'] = array(
    'name' => t('Fancybox'),
    'callback' => 'fancybox_uc_image_widget_impl',
  );

  return $widgets;
}

/**
 * This function generates the fancybox-specific HTML attributes.
 */
function fancybox_uc_image_widget_impl($rel_count) {
  if (!is_null($rel_count)) {
    $img_index = 'uc_image_'. $rel_count;
  }
  else {
    $img_index = 'uc_image';
  }
  return ' class="imagefield-fancybox" rel="'. $img_index .'"';
}

I tried to to push this in Ubercart core (#903118: Fancybox image widget support) but this proposal was rejected. :)