I agree. I don't use folder renaming --I prefer to name individual files (vid, nfo, poster, thumb). I choose folder names manually.Javinizer was pretty much the inspiration for JavLuv, except I wanted it to be much more user-friendly to install and use. I like their idea of using special format strings to create a customized sorting structure, so I'll probably do something similar. I've got a pretty good idea of how that could work.
One question I have though: Javinizer allows you to use Actresses during folder renaming. That makes sense for movies with a single featured actress. For example, you could create a folder with all Yui Hatano's movies. But how does it work with two or more actresses in a single movie? What happens in an omnibus film with a dozen actresses? It seems like that wouldn't work very well for certain types of movies.