I am using it as my daily driver and have replaced couchpotato. It has a few niggly bugs, but nothing earth shattering for me. I haven't added my movie collection yet, I am waiting for the bulk-add update to drop for me.
I have been using the List featured to grab Trakt lists I like, and my own personal imdb/trakt lists came in just fine. Pretty impressive for how new the project is.
Not sure what you mean by the subfolders, my setup is
\media\movies
and then each movie gets its own folder, so movie (2010) etc