> The main reason for the switch was one killer app; the i3 window manager. Keyboard shortcuts, tiled windows, lightning fast to use - it feels like a piece of software designed for people who tinker and use computers a lot.

If that's the main reason, how about yabai on Mac? https://github.com/koekeishiya/yabai

> The primary function of yabai is tiling window management; automatically modifying your window layout using a binary space partitioning algorithm to allow you to focus on the content of your windows without distractions. Additional features of yabai include focus-follows-mouse, disabling animations for switching spaces, creating spaces past the limit of 16 spaces, and much more.