Hello Michael,
In addition to the ArcGIS Ideas post Kory made, we also have an internal enhancement:
[ENH-000118063: Create a Print Preview button in ArcGIS Pro]
Feel free to give us a call in Support Services and request to have a case created so that you can attach yourself to this enhancement. Then you will also be able to follow this enhancement in My Esri.
We look forward to hearing from you!
Rachel
Esri Support Services
Rachel Guttmacher
ArcGIS Online Technology Lead
Esri Support Services