Allow Templates to be Bulk Edited with Guide Admin or API

Article templates appears to be the only item I cannot change in bulk.

We have multiple templates used that are different for each article's context, but it appears this has to be changed per-article, one at a time, and cannot be changed in bulk in Guide Admin. There also does not appear to be a field in the API that can be used to either recognize a template in use on an article, or to change it.

I have a considerable batch of articles that need template changes, and they must be done one at a time; I cannot select them all in Guide Admin and make one click to change them all, nor can I batch edit them with a script and the API.