Hi rgoldman,

Thanks for reaching out here.  I can see how you'd benefit from having the options for recurring invoices and the ability to have a link for payment  QuickBooks Online Payments is a great feature that allows your customers to pay directly from their invoices.  I'd be happy to provide more information!

As you're already aware, the option to include a service period currently isn't available.  Providing a suggestion to our Development Team would be the best route for feature updates.  With regards to payment options, your customers will see a 'Pay Now' option on the invoice you send.  Follow this link to learn more about accepting customer payments for online invoices.

Please don't hesitate to reach back out with any other questions.  We'd be glad to assist!