Allow changing the date as well as the status via VBO.
Default to only showing "pending" deliveries, and allow filtering by multiple statuses.
Add table column options and empty text.
Remove Notes column, put orders at the end, add a filter by order id.
Change the path and menu of the deliveries list so that it is a default local task, allowing more subtasks to be added.
Add a form for generating deliveries based on past completed orders.