Aside from that small design mistake, it looks like a fun and
Put the keys on a 4x4x4 rubics cube so you can randomize their position a bit.
I had an idea of a keybord that you can hold like a ps controller with most keys on the back of the device. I imagine it would have quite a learning curve but maybe it’d be good for avoiding RSI? Or maybe not.
Do you know whether anyone had a similar idea and actually built a prototype?
The twiddler was held kind of like that. But it’s a one hand chorded keyboard, and feels about as ergonomic as its shape suggest.