Data Driven Reference Scale

[MarkJennings]

I would like to use a data driven reference scale.  This would allow me to create clean maps.  I often work with 2 or more scales when creating maps.  Sometimes I would like to set the reference scale to be specific for an index Map that shows all of my map boundaries and sometimes I would like to keep the reference scale the same as the rest of the maps so that it's like a "Blowup View" of the same map.  

[MatthewDriscoll]

This already exists.  Use the Extent tab and go to Data Driven Scale.  You have an attribute in your data driven feature to tell it what scale you want.

[KoryKramer]

It sounds like this idea may be requesting what was requested in Reference Scale for single layers ?

I wonder how much of the need would be addressed with Scale-based symbol classes—ArcGIS Pro | Documentation , Scale-based symbol sizing—ArcGIS Pro | Documentation and Use display filters—ArcGIS Pro | Documentation  in ArcGIS Pro.