rewrite hierarchical in taxonomies

Would you mind adding the “hierarchical” thing as below in the code to the plugin?
I marked my additions with SASCHA CORE HACK. I’m sure I asked before, but I could not see the changes in the changelog. Maybe you think it’s a bad idea?

//set custom taxonomy values
			$cpt_label              = ( !empty( $cpt_tax_type["label"] ) ) ? esc_html( $cpt_tax_type["label"] ) : esc_html( $cpt_tax_type["name"] );
			$cpt_singular_label     = ( !empty( $cpt_tax_type["singular_label"] ) ) ? esc_html( $cpt_tax_type["singular_label"] ) : esc_html( $cpt_tax_type["name"] );
			$cpt_rewrite_slug       = ( !empty( $cpt_tax_type["rewrite_slug"] ) ) ? esc_html( $cpt_tax_type["rewrite_slug"] ) : esc_html( $cpt_tax_type["name"] );
			// SASCHA CORE HACK
			$cpt_rewrite_hierarchical       = ( !empty( $cpt_tax_type["rewrite_hierarchical"] ) ) ? esc_html( $cpt_tax_type["rewrite_hierarchical"] ) : false;
			// END
			$cpt_tax_show_admin_column = ( !empty( $cpt_tax_type["show_admin_column"] ) ) ? esc_html( $cpt_tax_type["show_admin_column"] ) : false;
			$cpt_post_types         = ( !empty( $cpt_tax_type[1] ) ) ? $cpt_tax_type[1] : $cpt_tax_type["cpt_name"];

			//set custom label values
			$cpt_labels['name']                         = $cpt_label;
			$cpt_labels['singular_name']                = $cpt_tax_type["singular_label"];
			$cpt_labels['search_items']                 = ( $cpt_tax_type[0]["search_items"] ) ? $cpt_tax_type[0]["search_items"] : 'Search ' .$cpt_label;
			$cpt_labels['popular_items']                = ( $cpt_tax_type[0]["popular_items"] ) ? $cpt_tax_type[0]["popular_items"] : 'Popular ' .$cpt_label;
			$cpt_labels['all_items']                    = ( $cpt_tax_type[0]["all_items"] ) ? $cpt_tax_type[0]["all_items"] : 'All ' .$cpt_label;
			$cpt_labels['parent_item']                  = ( $cpt_tax_type[0]["parent_item"] ) ? $cpt_tax_type[0]["parent_item"] : 'Parent ' .$cpt_singular_label;
			$cpt_labels['parent_item_colon']            = ( $cpt_tax_type[0]["parent_item_colon"] ) ? $cpt_tax_type[0]["parent_item_colon"] : 'Parent ' .$cpt_singular_label. ':';
			$cpt_labels['edit_item']                    = ( $cpt_tax_type[0]["edit_item"] ) ? $cpt_tax_type[0]["edit_item"] : 'Edit ' .$cpt_singular_label;
			$cpt_labels['update_item']                  = ( $cpt_tax_type[0]["update_item"] ) ? $cpt_tax_type[0]["update_item"] : 'Update ' .$cpt_singular_label;
			$cpt_labels['add_new_item']                 = ( $cpt_tax_type[0]["add_new_item"] ) ? $cpt_tax_type[0]["add_new_item"] : 'Add New ' .$cpt_singular_label;
			$cpt_labels['new_item_name']                = ( $cpt_tax_type[0]["new_item_name"] ) ? $cpt_tax_type[0]["new_item_name"] : 'New ' .$cpt_singular_label. ' Name';
			$cpt_labels['separate_items_with_commas']   = ( $cpt_tax_type[0]["separate_items_with_commas"] ) ? $cpt_tax_type[0]["separate_items_with_commas"] : 'Separate ' .$cpt_label. ' with commas';
			$cpt_labels['add_or_remove_items']          = ( $cpt_tax_type[0]["add_or_remove_items"] ) ? $cpt_tax_type[0]["add_or_remove_items"] : 'Add or remove ' .$cpt_label;
			$cpt_labels['choose_from_most_used']        = ( $cpt_tax_type[0]["choose_from_most_used"] ) ? $cpt_tax_type[0]["choose_from_most_used"] : 'Choose from the most used ' .$cpt_label;

			//register our custom taxonomies
			register_taxonomy( $cpt_tax_type["name"],
				$cpt_post_types,
				array( 'hierarchical' => get_disp_boolean($cpt_tax_type["hierarchical"]),
				'label' => $cpt_label,
				'show_ui' => get_disp_boolean($cpt_tax_type["show_ui"]),
				'query_var' => get_disp_boolean($cpt_tax_type["query_var"]),
				// SASCHA CORE HACK
				//'rewrite' => array( 'slug' => $cpt_rewrite_slug, 'with_front' => $cpt_rewrite_withfront ),
				'rewrite'	=> array(
						'slug'     		=> $cpt_rewrite_slug,
						'with_front'   	=> true,
						'hierarchical'	=> $cpt_rewrite_hierarchical,
					),
				// END

				//'rewrite' => array('slug' => $cpt_rewrite_slug),
				'singular_label' => $cpt_singular_label,
				'labels' => $cpt_labels,
				'show_admin_column' => $cpt_tax_show_admin_column
			) );

https://www.ads-software.com/plugins/custom-post-type-ui/