You can create a template like Posts or so.
And you can insert a template as shortcode like following.
Please click a "Insert Template" then you will see pop-up.
Select a template and click OK to insert template.
If you would check a "Insert as Shortcode." it will insert a shortcode in the visual editor, so you can update in a lump.
TinyMCE Templates is fully unit-tested. The plugin is stable and ready to be used in large projects like enterprise applications.