Add Token support

It looks like https://www.drupal.org/project/field_updater → may be a match for copying content from one field to another:

The easiest and fastest way to update fields in Drupal. Provides a batch processing service to copy values from one or more field sources to a target field.

Token support most definitely could be added; however, I don't see how context of an entity could be used so it would only support global tokens like [site:name]