Workflow Automations allow for sending emails as an Action. While we can copy/paste an already formatted HTML page into the Body of emails in Events, it can ruin the formatting (such as with tables). This isn't good when you're trying to keep to a specific look and feel for branding.
It would be great to be able to edit the HTML Source in the Body of emails for Events in Workflow Automations. Having this control would help ensure emails are sent out exactly as you expect.
(The HTML Source can already be edited for Email Notifications so having that option in Emails from Workflows would be very helpful too.)