Stamps with Custom Fields

I’m aware that Docusign has the ability to create “Name + Date” stamps, which will allow an end-user to add a custom date as part of the stamp:

What we’re looking for is the ability to add custom fields (such as reference IDs & other elements such as % rate) into a stamp, which the end-user can stamp on a document. This will significantly cut down our end-users' workloads, as they wouldn’t need to individually place fields on the documents that they need to stamp.

The functionality that matches closely with this would be similar to Docusign Templates, but instead of adding a separate document as a new page, it’s a stamp that you can place at the places where you’d normally place a stamp, so no new pages are needed to be put in.