This is great! I find the one thing I miss the most from i3 that none of the macOS tiling managers seem to have is i3bar, or a minimal bar that displays what space I'm on, how many spaces I have, cpu/ram usage, etc. I've tried to find configs that emulate this with Spacebar [0], but haven't been able to find anything
You can likely do this with Hammerspoon. It should be pretty straightforward as long as you have somewhere you can get the name/id of the space that you're on.
[0] https://github.com/cmacrae/spacebar