I have a very tidy room but I had never ruler folded my fabric. There are a few threads I just saw recently on ruler folding. I just grabbed my favorite ruler and tried it. It works beautifully. It allows me to use alot less space to store the fabric and allows me to scan what I have.
I also have separate boxes for each of my WIP.
I was looking at the functionality of your storage. I think it isn't working because it is open on all sides. It makes it awkward to store your fabric. I would recommend getting or making bookcases with a closed back and sides. I also got a new storage container for my threads. It is closed and stores threads on two sides (I use one side for the machine piecing/quilting threads and the other side for the hand quilting (for stitching bindings).