You interested in my attempt at integrating Emacs and stumpwm? It’s not great, but I managed to do some cool things like have Emacs emulate rofi for launching apps and as a pass frontend, and to unite key bindings in a smart way (for example, same shortcut: move stump window, move Emacs window, and if no Emacs tiles to that side move the whole Emacs window through stump).

I really liked using it, but i3 has so many nice features.