Nested templates or re-usable components/snippets in templates
In our SaaS platform, we have hundreds of events that trigger an email notification. Each email notification uses a different template that has different content and layouts. But they all share the same header, footer and styling.
It would be nice if we could either nest templates into other templates (having one global Layout template with different content for each template) or have a component that we can import into templates, such has being able to create a component for the header and one for the footer, then import them into a template.
It'll allow us to edit the header or footer in one area without having to open hundreds of templates to update our header, for example.