Account Balance / Log Payments
I use WooCommerce for my personal business. For my services, clients don't pay for services all at once, they pay for services in payments or installments. It would be great to be able to log payments with the date, amount, payment type, ect.
Once the transaction has been logged, the client can see their remaining balance inside of their account. (With this, it would be nice for client's to be able to add money onto their account as well for automatic payments made through another gateway, or by the admin manually adding it money to their available balance.)
David Pembrook commented
I also need to be able to issue store credits that can be used to purchase products. The customer should also be able to fund their account through a normal payment gateway.