Ability to fully replace entire Dataflow M code (overwrite) without creating a new Dataflow, and without having to go into each entity/query one by one. This could be done via import of .json, IF imp...
Sort of a workaround while this feature is not available yet: You can select all queries from the source dataflow (either by CTRL+click or by SHIFT+click) and just copy and paste them to a target dataflow. You will still need to modify the parameters, but this might save you some time.
