[mmgutz]

Tilers can remove Gnome's overly whitespaced decorations, probably saving 10% in screen pixels alone.

If you want to maximize all windows on run, niri can do that with a rule. It then becomes like a monocle layout where you can use swipes/keyboard/scroll wheel to navigate between maximized windows. I don't know of any DE that will run all windows maximized by default.

Too bad I no longer have an 800x600 netbook. Niri would be perfect for it.