Solarmass I see it could be useful on ultra-widescreen monitors. On my 16:9 monitor I mostly use 2 windows side-by-side. If you add a 3rd window, it would become less practical. And I prefer to have some apps in maximized window mode, like browsers, or floating window mode for other apps.
I get what you are saying. If I tailor bspwm it will be with a single-minded plan with a single monitor: a workflow with 3-4 tiles for maximum workflow. I really want to see how the other side lives () and see if one can accomplish more without a conventional DE.
Or is a tiling manager just a fetish.