I'd love more bed organization options. I have the bed utility group that only has 4 tie downs. I would like to see bed dividers, storage compartments, maybe a temp spare tire bracket. All stuff that uses the underused rails.
I would like a storage tray that goes across the bed, a few inches deep, maybe 2 feet front to back and the width of the bed and is suspended from those tie down rails. This would give you a place to put smaller items while leaving the full bed below for larger items. Make a lid optional, so if you didn't have a tonneau cover you could secure the items in it.
You could use it for ratchet straps and shit like that or when tailgating you could put beers and ice in it. Doesn't need to be insulated, just water tight and possible have a drain plug.