Absolutely, Clip-To-Shape needs to be added to Pro. Stunned that it hasn't been added, yet. Today, I wanted to try out Pro to work around the ArcMap problem where data frames are not transparent when exported to PDF. The page I found said to use Pro to fix this problem. HOWEVER, Pro can't do Clip-To-Shape, which my map requires, so it's not up to the task, either.
Please, vote UP on this suggestion in ArcGIS Ideas:
Clip map to shape in ArcGIS Pro
arcgisprostillnotreadyforprimetime