This would function the same as the Order - Item Tags rule but would support custom taxonomies.

Every code is "REF" plus some combination of letters and number (i.e. REFPJN4VWDTQK). Any plan to allow us to customize the template for the code - such as the advocates first name or our store name plus a combination of letters and numbers (i.e ROB-12xfd or NECM-dfhcn6)?

https://woocommerce.com/products/shipment-tracking/ We already have an integration with Shipment Tracking, but that's primarily variables. The use-case here would be to trigger when a shipment tracking number is added to an order. Since some external CMS software auto-adds tracking info to orders, it could be useful to trigger when that info is added to the order.

Expand the manual workflows tool so it can be used with carts. E.g. send an email to carts that were abandoned in the last 30 days with a special offer.

https://wordpress.org/plugins/polylang/

https://woocommerce.com/products/smart-coupons/ Add actions that would allow creation of gift cards and store credit via a workflow.

Investigate adding support for WP-CLI. Ideas/suggestions for commands welcome in the comments.