It would be interesting a grid to organize the construction of campaigns, because in the loose mode, can not always adjust for easy viewing the entire campaigns run. Especially when it involves big campaigns.
Or maybe an option of automatic organizer, would be nice too, could be a nice alternative.
Or maybe an option to use straight lines instead of loose curves, as in this example (https://jsplumbtoolkit.com/demos/toolkit/flowchart-builder/index.html)