Deprecate not needed functions in page module
The page module can be cleaned up by removing/deprecating direct support of extensions in core which is not needed anymore because of other possibilities.
It is all about showing records in page module which can be achieved now with a code like that
$GLOBALS['TYPO3_CONF_VARS']['EXTCONF']['cms']['db_layout']['addTables']['tx_myext'] = array ('default' => array( 'MENU' => 'LLL:EXT:tx_myext/locallang_db.xml:menuDefault', 'fList' => 'title,description,image', 'icon' => TRUE));
support for this for fe_user records is added to the config_default.php.
Any other extension now needs to take care of that on itself