Created attachment 107352 [details] Full screen Krita with pixel saver applet on budgie desktop Plasma already has nifty feature that moves menu into panel (global menu). Unfortunately this works only with QT apps. Maybe it's possible to add otion to merge title bar into panel for every maximized window, it could save screen space with top-panel layout. Screenshot of Budgie desktop with pixel saver applet attached.
You can enable BorderlessMaximizedWindows (you lose the titlebar completely for maximized windows, though).
Thank you, yes, BorderlessMaximizedWindows is cool option. Unfortunately it will not add app title and window controls (not visible on screenshot) to panel. I was thinking how to make window controls to blend nice into panel, as they look not-so-good by default and idea is to have them hidden until you mouse over app title on panel. I'll try to make mock-up using plasma window controls for this in spare time for icon-only task switcher. It could be complement to app global menu.
In fact, there are applets you can add to do that these days.