email subscription (MailChimp, etc.) auto triggers Store Credit
Many eCommerce shops offer store credit (or discounts) for new customers to get them to subscribe to their email list (because, as everybody knows, capturing their email address helps to retain customers).
Currently, with WooCommerce Store Credit, if someone subscribes to your email list to get their Store Credit code, you have to send it to them manually (by taking the email address and then going to WooCommerce > Send Store Credit). This is not a big deal if you only have a handful of customers and only the occasional new subscriber, but this process takes a lot of time if you have to send Store Credit frequently. In other words, for busy, fast-growing shops that get new email subscribers every day, it is very time-consuming to manage the distribution of Store Credit.
You can improve WC Store Credit by making it possible to send preset amounts of Store Credit via a trigger/action like subscribing to MailChimp.
I hope I explained this clearly.