Are there any plans for a revamped breeze theme in Plasma 6?

[Kresimir]

You can make it so that maximised windows do not show titlebar:

Hide Titlebars of Maximised Windows

In my opinion, titlebars are a total waste of space on maximised windows. Hiding window borders (including titlebars) is easily done on Plasma on a per-window basis using the Window Operations Menu, default shortcut: Alt+F3, or on a per-application basis, by setting Window Rules. But that is quite slow and cumbersome, as you would have to do it manually for every window. Not good. You can also set a keyboard shortcut to hide and show window borders. Better, but you still have to do it manually. …