So ergonomics and kinesthetics is a passion of mine, I actually got a health associate’s because of it.
I think a large keyboard is a great idea, but I don’t think it should have extra keys. Or rather, I don’t think it should have keys that are reachable by a large stretch of your fingers. Humans are designed to move, so what I’d love to see is a keyboard that has interesting and different input methods, kind of like what did with the
[xbox adaptive controller](https://www.xbox.com/en-US/accessories/controllers/xbox-adaptive-controller).
A little relevant background on me, my particular disability can best be described as RSI-induced bursitis, which means that at 37 I have arthritis. I went to nursing school for awhile, because the healthcare in the States is so bad that it was cheaper to just gain the ability myself. In my keyboard journey, I started with the logitech wave, and wanted but could not afford the Microsoft Natural Keyboard. I gamed a lot, and amassed a fleet of mice, as one would feel better for awhile, and then eventually start to hurt. I wanted but could not afford the Kinesis Advantage, so I went with the Freestyle 2 as a cheap alternate. It changed my life. At this point, I have two of the Freestyle Pros, and a broken Freestyle Blue.
All this to say, I’ve been on this journey for a long time, and I’ve made it my mission to help others along it. The giant keyboards that are being shown here have a lot finger stretch, and I think that’s the opposite of what a good giant keyboard. One example of a good giant keyboard that I can think of off the top of my head is 5 or 6 Model01 key clusters, all too far apart to finger stretch between, and a couple of knobs and dials the are big enough to be comfortable for someone with large hands to use as a scroll device.