For next iteration, consider integrating trackpads? Moving to the mouse and back is pain enough that people go all-in on keyboard-only interfaces. I velcroed a trackpad to the middle of a Kinesis Advantage. Now I use either hand for the mouse, and even stretch a finger or thumb to the pad without leaving the keys. The movement is little different from using the keyboard. But for split keyboard, you'd need one trackpa…
I want a trackpads integrated into the keys. Under the J key a trackpad with low sensitifity, and under the K key a trackpad with high sensitivity.
We should bring that back, I think I like it more than the thinkpad style