Adding a due date to each product on a Purchase Order, or at least having a notes feature on the Purchase Order to add info such as due date etc..
Neil McQuillan
This will be coming next year after the launch of the new backoffice, it's one of the core goals for the general overhaul making this possible.
Here is a link to some of the work on the UI to give you a quick taster of other benefits of the overhaul.
https://www.loom.com/share/600244d9f42949268c6bb449fc08f7d4