> The planar layout allows me to use my spatial intuition, which, in the end, allows me to manage many more windows.
Never you mind the spatial intuition - as is, gnome shell won't even let your _see_ where your stuff is.
It's a bit like this. You have drawers with socks, undies, shirts etc. Normally, each of the drawers has a picture on it of what's in it and generally, drawers are not interchanged, unless you decide to rearrange.
Gnome shell version if this is that you are not allowed to put pictures on your drawers, your drawers get occasionally reshuffled (depending on how you decide to dress in the morning) and obviously, you actually need to look into each one to see what's in it every single time you need something.
The rationale is that this is preventing you from becoming a compulsive clothes changer. :-)