Page query defined by attribute of index layer in map series

[FourCornersMapping]

When using a map series based on an index layer, I suggest the ability to use page queries on other layers based on a common attribute, not just the page name. 

For instance, in my locator map, I have a county layer, and I want to show only the county that matches the same county attribute of the current page.

 

[AlfredBaldenweck]

This would be extremely sweet.