My favorite technique is “stacking functionality”. So different layers have similar functionality with the same keys. For example: I have arrow keys under “IJKL”. With different mod keys, these change to “select text up, down, left right” or “move text up, down, left, right” and even “move screen to workspace up, down, left, right”.
Do you have layout techniques to help minimize cognitive load of all your extra functionality?
Nice! I’m also on Linux, using i3 windows manager. I love the versatility of managing what is shown on each of my screens and jumping focus from workspace to workspace!