Oh I agree, I've got all of my media set up in Folder Structure, and I continue to organize it via Folder Structure even while conforming the library database to my needs.
I would be in heaven if I could organize my files like I did in MediaBrowser where I just pointed something like Kid's Movies to a folder or folders and when I launched TheaterView it would all be there.
There's still more behind-the-scenes fiddling with stuff with the Library that I would love to avoid.
Just last night we went to watch a movie and it wasn't in my Movie list. Since I was on the couch using the remote, I was a little frustrated that I had to get up (I was comfy) and grab the keyboard from the entertainment center, quit TheaterView, find the movie that I wanted in the list, then fix the fact that it wasn't tagged correctly (not sure why) then F11 back into TheaterView and verify that the movie was there and launch it.
If it was organised by Folder Structure, just the fact that "The Girl with the Dragon Tattoo" was in the Movies folder would have meant that it would have showed up where I expected it to.
While I was fixing that tag, I noticed that 50/50 had the wrong info and cover, so when I selected Get Movie and TV Info (or whatever it's called in the menu) I noticed that the library function overwrote my Genre tag (that my TheaterView uses to organize what shows up where) and I had to switch that back or that movie wouldn't have shown up in my list.