[mst]

> I have an infinite number of separate workspaces, each arranged in their own way. I like being able to see and have at-hand everything at once on one screen, which is an illusion best maintained, for me, by a single desktop. Even more than one monitor is more of an "immersion-breaker" than I care to mentally deal with.

I feel exactly the same way but solve it by having an fvwm2 configuration that makes my workspace 3x3 (currently) of the physical screen size and I can scroll the viewport around that to taste.

See https://trout.me.uk/X11/fvwm2rc for my configuration if curious (for a more actual-GUI-ish workflow you'd want to configure more of its features, I generally just have lots of xterms and maybe a firefox - see https://trout.me.uk/screenshot4.png)