Hi Darwing,
Thanks the work done until now despite Apple’s new show stoppers (SIP). 
Bug reporting:
As previously mentioned by email, the size of the column “Name” in list view goes back to default size once I move out of the folder despite that I adjust the length to the desired one. You once mentioned to me that it was an issue already identified, do you have this bug coming up in the list of those to be squashed?
Update:
I just noticed that if I double click on the edge of the column to resize the width to the longest file name, Total Finder will remember, but if I resize by dragging, then TF forgets. Is this value stored somewhere that can be used to address this bug?
Mauro