The ability to map which fields can get mapped to different Google Microdata fields.

Microdata uses simple attributes in HTML tags (often <span> or <div>) to assign brief and descriptive names to items and properties.

https://support.google.com/webmaster...&answer=176035

Specifically would like to be able to map:

Headline --> name
Main Image --> image
description --> description
Make --> brand
body style --> category