Feature Request - Improved Backorder Management

[OrangeBalloon]

Improve Management of Backorders in Shopify

Currently backorders are limited to the in stock/inventory status of the product page. Once a customer adds to cart there are no further indicators that an item is on backorder. Not in the cart, checkout or order confirmation emails. Also in the Shopify admin there is no indicator to staff than order is on backorder or which line items are affected.

Key Features To Add

1. In the admin and customer order view show which line items are on Backorder.
2. Add Product Backorder note in the cart and checkout (similar to the subscription or discount functionality).
3. Option to add backorder details displayed on hover via a tooltip etc. Store default backorder message, Example: This item is made to order with a lead time of up to 10 working days.
4. Email order confirmations include backorder details for each line item. Possibly add a separate order email template for orders containing backorders.

[lixonic]

Just did the same for client last month. Here is how we did that
1.  Detect backorderState using javascript , if (cartQty > inventoryQty) then save backorder: true as  line item property.
2.  Modify cart.liquid /  cart-items.liquid to display the backorder warning which is saved as block in settings_schema.json

3.  create a custom conditional block in order-confirmation.liquid with the same logic

But we omitted the part where the order is flagged as backorder   using  orders/create webhook  
what we implemented was mostly theme dependent and focused on enhancing the user experience layer.