allow workflow to create a document based on a letter template. And then attach this object to the email for an approval task.

for example, the user fills in a form, the officer then creates a document using a letter template that is pre-populated using the data from the request form. The officer is not adding any value by doing this task. If the workflow could create the document directly and then attach it to the approval email. The entire review could take place without the intervention of the officer.