Please allow the connection to Dataflows' entities from Excel's Power Query. There are many cases when customers use Excel and not Power BI. But Dataflows can make the refresh process much faster for...
Very important to data model prototyping together with Excel users - they are used to seeing data in a certain way. This is a half-way house for them to help with validation of data before they get Power BI reports which look and feel very different to what an Excel user is used to. Further, it might even enable historical Excel type use-cases on larger datasets. Please, Redmond. Listen up!
