Extending a list of available term search methods

There is an idea to extends a list of methods.
I just put on it here

function _taxonomy_feeds_form_callback_options() {
  $option = array(
    FEEDS_TAXONOMY_SEARCH_TERM_NAME => 'Term name',
    FEEDS_TAXONOMY_SEARCH_TERM_ID => 'Term ID',
    FEEDS_TAXONOMY_SEARCH_TERM_GUID => 'GUID',
  );
  $option = module_invoke_all('taxonomy_feeds_form_callback_options_alter', $option);
  return $option;
}

        // Lookup by hook.
        default:
          $tid = module_invoke_all('taxonomy_feeds_form_callback_action_alter', $term, $mapping['term_search']);
          break;