Stripe for WooCommerce

Option for customers to add a backup payment method to account (and subscription). When a payment fails, especially subscription renewal payments, e.g., due to insufficient funds, a customer-selected/customer-confirmed backup payment method could then automatically be used for another payment attempt immediately after the initial failed payment attempt. I have also submitted this as a feature request for the WooCommerce Subscriptions plugin as I’m unsure whether this would be handled by WCS or by the individual payment gateways.