Feature Requests

1. Ability to add serial number on the fly for each item on the sales page. Every item in my store has a different serial number, even they are the same item. We are a device repair company, we repair devices that sent to us from different places, all devices has unique serial number even it's a same device, e.g. iPad 7 coming from customer A has serial number 1111, second iPad 7 coming from customer B has serial number 2222, we would like to have the ability to add serial number from the sale page, also display these numbers on the receipt. Is it possible to make UPC number editable on the sale page and make them display on the receipt page?
2. Ability to add additional service to an item. for example. I have a computer repair that need LCD replacement, also need OS install, I would like to add the OS install as an additional service to that item. I think the Modifiers can handle this, but it didn't separate out the price. My customer want to know the detailed prices for each item and additional service on the receipt page.