Separate E-mail for Recurring Invoices
Do you have something in the works already so that the e-mail sent for recurring invoices can be customized separately from one-time invoices.
If not...this needs to be added to the list. The recurring billing feature is a little lacking.
Also, being able to set the total number of payments would also be helpful instead of trying to calculate the date the payments should stop if its a short-term arrangement.