It must be wonderful to have new order in your sewing area. One thing has always bothered me about open shelving, and that is the fade and dirt threats. You are not going to get through that stash in the next few months (I don't think you will, anyway) and I would worry about light and dirt. I use cupboards (but am thinking about wrapping the fabrics using cores or rulers so I can stand the fabric upright for better usability) and use similar bin drawers your photo shows for smaller pieces, sorted by color.
Has anyone out there had any problem over the years using exposed shelving. Is there something I'm just not understanding?