In MYOB essentials, having a tab/button on invoices that have past the due date allowing a single click "late notice" to be sent would be very helpful. Or even an option to send reminder notices every xxx days automatically. This could be a simple one off form or (even better) a form that could be customised along with the invoices themselves in the options menu. In some circumstances the ability to add a late fee dollar amount or % would be useful.
I look forward to an update if possible, I would assume others may share this view too.