The only template I use is the save template in the KoboTouch driver to set the filename. If you are using the KoboTouchExtended driver, you will need to enter the same information there. I don't use any templates that modify the title/series/subtitle of the book since my Kobos handle that information.
The template saves the books sent to my Kobos in a directory called Elib and then in subdirectories using the first entry in the author sort with the file named using the title and the first entry in the author list. The first entry just keeps the filename and path length under control.
Code:
Elib/{author_sort:sublist(0,1,&)}/{title} - {authors:sublist(0,1,&)}
For the KoboTouch driver and the edit metadata, I've attached images of what I am using.