> Besides reducing the number of keys, are layers good for anything else? The most significant advantage, IMO, is allowing for reduced hand movement. -- e.g. e

> Besides reducing the number of keys, are layers good for anything else? The most significant advantage, IMO, is allowing for reduced hand movement. -- e.g. enabling access to cursor keys or a number pad without needing to move your hand. To an extent, layers also allow reducing usage of the (weak) pinky fingers in favour of the other fingers. I have "move to previous virtual desktop", "move to next virtual desktop" with convenient key-chords; but these could be put on a layer as well. I think "layers for specific editors" is unlikely. These split keyboards are great for "both hands on keyboard" tasks, but much harder for "mouse + keyboard" programs with QWERTY-specific keybindings, like Blender or whatever CAD. The reduced number of keys has some benefits: the keyboard takes up much less desk space. With the DIY keyboards it allows for a lower cost: smaller number of keys also allows for a smaller PCB, and not needing to order as many key switches.