https://youtu.be/81R5TjPrVVI
There is a very interesting utility in the video description that imports a route file and can add an adjustable number of shaping points between via points. It can also add a sequential prefix to each routing point name.
My route planning is 99.9% in Basecamp, but I thought this might be useful for those using other route planners. I did try renaming points in a route gpx from Basecamp, but that did not work.