I love the automation to create an Outlook Calendar event from a task and think something along the same lines but for composing an Outlook email could be more beneficial than the Outlook email automation.
I have a lot of tasks on my boards about sending emails to people outside of my organization and being able to create a task where the description is in the body of the email (where my signature or others in my organization is an option to be included as well as attaching files) would streamline many of our processes. It would be even better if it could reply to an existing email chain.