Data flows are cool and I think there is potential to make them even more user-friendly and enterprise class.
What I would like to do is use Power BI Desktop application to create an assortment of m queries and then deploy them as dataflows.
I get the full query editor experience.
I get the full range of connectors.
I can put the m queries in source control.
+10 points => showing off
if I can deploy m queries from an xlsx file as dataflows