When a fallout report is exported from AdHoc Analysis then data is available with day granularity along with aggregated data but when fallout report is exported from Analysis Workspace then it only show Aggregated data.This is a feature request and should be available in Analysis Workspace as well.
Thank you for submitting this as an idea to view Dashboard under Dashboard Manager with the availability of sort optional for the ease of accessibility.
In Adobe Analytics the Character limit of PageName is 100 bytesReference:https://marketing.adobe.com/resources/help/en_US/sc/implement/pageName.html If PageName exceeds the limit, it gets to strip off so increase the limit upto 255(characters)
Single Page Visits Metric is not available in Data Warehouse.Due to breakdown feature of Data Warehouse it will be good and easy for reporting if this metric get available in Data Warehouse.