Some users have requested shorter URIs for order landing pages. Here are a couple routes you can add to the bottom of your /config/routes.php file to take advantage of shorter URIs:
Router::route("^order/configure/(.+)", "/order/main/configure/$1");
Router::route("^order/id/(.+)", "/order/main/index/$1");
Using the above routes you can link users to:
/order/id/ORDER_FORM_LABEL/
/order/configure/ORDER_FORM_LABEL/?group_id=1&pricing_id=1
Replace the bold items with the correct values for your setup.