You have already created an embedded template that saves you from having lots of templates with the same basic HTML code inside. When working with templates in ExpressionEngine, it's best to avoid code repetition of code as much as possible — whether the repetition is within a single template or across multiple templates.
Any situation where code is repeated can be a major headache, should you ever wish to update that code; instead of being able to make an update in a single location, you instead have multiple places to make the same update, increasing the likelihood that you miss one. On a small site with only one or two templates, it's easy to manage code that is repeated, but as your site grows, having the same code in more than one template can make changes very difficult and time-consuming to accomplish.
ExpressionEngine has four ways to reduce repetition:
1. Preload text replacements
2. User-defined global variables
3. Snippets
4. Embedded templates
Each of these methods...