Using Contribution to add terms to Simple Vocab

In my collection, the Creator and Contributor fields are controlled by Simple Vocab. I would like for the names of contributors to be automatically added to the controlled vocabulary for DC.Contributor.

I have a workaround for this - go into Simple Vocab and add the name of the contributor to both lists. It works best when I remember to do it before editing the new item. Has anyone written a script to implement this?

Not that I know of, but that would be a great project for someone in the community.