I’m interested to hear what you have in mind.
For me though, the two monitors are just one screen which I should have total flexibility over. And workspaces are a way to switch context -- to a different set of tasks.
The ⊢ shaped arrangement is the result of a tendency towards more squarish (than wide-screen) canvas. I still manage to find 16:10s (as opposed to 16:9s) in that vain.
However, I would highlight, that it's ability to work in multi-monitor is huge selling point.
You would like to show something from an another screen, plug the cable, press suitable hotkey, and the workspace, that you were just working on, jumps to the new display. No need to move windows.
You go back to your desk and plug in the laptop. The workspaces will automatically jump to the monitors, per your config.
Next, you run to a meeting, the very same workspaces collapse back to laptop's monitor automatically.
There was no need to touch windows in any of these scenarios, And no more "I forgot the browser windows to the attached display" that has happened with some other systems.
My wishlist would be to have this go further and be aware of inter-monitor, relative positioning as well. For example, I use the ⊢ layout (one rotated monitor on the left, one straight monitor right in front) and it's usually an unsatisfactory experience tiling windows for productivity.
Things I do on the vertically oriented monitor on the left are mostly reading documents or watching logs.