Thanks! It was actually inspired by rvaiya's warpd [0] which has a similar grid mode but with quadrants instead.
I thought that needing to choose out of four quadrants at once is a bit overwhelming on cognitive load for something that is meant to be a subconscious extension of your hands, so instead I just unified it with the arrow keys as a "shrink in this direction" choice rather than "choose one of four quadrants".
Changing it to bisection/binary partitioning also means that don't need any visual aids as it's exceedingly simple to see which edge your target is the closest to.
Not really the same thing, but I found warpd to be the most usable keyboard navigation solution for Linux
Warpd is useful on Linux.
It certainly would be but looking at the options tells me that they're hooking into MacOS's widget libs and on Linux there's just so many. What I get by with to go mouseless is Tridactyl for Firefox, warpd for when I need a pointer, and when I absolutely, positively need a mouse, mouse emulation on QMK keyboards never fails me. I only need it these days for dealing with MacOS outside of my Linux VM. I also use keyd in order to remap keyboard shortcuts.
https://github.com/rvaiya/warpd https://github.com/rvaiya/keyd
Why in the world are those links side by side?
warpd avoided me spending a lot of time going from the keyboard to the mouse,for simple point and clicks. Honestly it is super useful.