Keyboard layouts are incredibly fascinating. For the amount of typing that is done today it feels like we are collectively still in the Dark Ages of textual input. A while ago on HN there was link to a talk from a stenographer (the people who do court reporting and other live transcription). They achieve the highest WPM by using a smaller keyboard and pressing "chords" of multiple keys at the same time, which map to…
For example you could map j + k to send escape, which would be very useful for a vim user. Or have other symbols easily reachable, without having to resort to layer modifiers.
Here's a blog post if this interests you: https://blog.gboards.ca/2020/01/weird-keyboards-programmable...