Responding to that included rebuttal I just included gave me an idea, although it's not perfect. I just set up 2 3x4 (vertical) hotbars overlapped for each grouping of gamepad controls, and it's coming together quite nicely. It's a shame that I have to give up almost half of all of my hotbar slots to do this though. 2 hotbars x 4 groupings = 8 hotbars leaves only 2 hotbars that can be used elsewhere.