Very useful!

The functionality is super fast. It also works with posts and taxonomies. One major improvement would be in the plugin description, on how to use it in a WP_Query, get_posts() or get_terms(). For some it is not clear how to use it in the code. You just need to add 'order_by' => 'menu_order', in the query parameters. Complement in 'order' => 'ASC'.