It would be great to be able to send email notifications to specified employees. You could tick a box for those that you would like to email. Make a template for the email (like invoicing) and send!
This would be handy for sending out memo's such as notifying employee's that there payroll summary is completed and available for viewing, or if you wish all employee's to complete a new form, or to notify them of something. It would be handy if you could attach PDF documents to the email also.