I actually created this workflow because I have a lot of problems with PDE (it delete or rename files, don’t seem to reload modules, etc…). The PDE template system does not work for me, as you still have to edit code inside PDE for every new sketch, and I had problems while modifying a .py module in PDE and hiting save, the .py file was actually not really saved to disk.
I have not the time or the motivation to develop a workflow that will work with the convoluted ways of PDE when that’s exactly the opposite of what I want to do 
You can however load .py files that are stored inside a /lib subdirectory (use Sketch > Add Files or drag n drop in PDE)
My first post is definitly not clear enough about what I’m proposing and the terms I’m using, but I can’t seem to edit it (forum restriction?)
I’ll remove the /lib directory to comply on PDE way of saving files.