It would be really helpful if the Project tabbed panel in ArcGIS Pro (which simulates Catalog to a degree) was able to “see” into other APRX documents to the map frames and layouts they contain. Imagine you are working on a project in ArcGIS Pro, and you want to browse through some of you previous map frames and layouts created in other projects. You could just navigate to the project and expand it to see a tree view of the maps and data frames inside. At this point, you could drag and drop them into your project (copy / paste) instead of going through the import process. Since we are not able to have more than one instance of ArcGIS Pro open at a time, this would be very helpful.