A nice feature in mutter is the ability to drag a window to the left or right of the screen and it will make that window occupy vertically half of the screen. It would be nice if a similar behaviour was introduced to make windows occupy half of the screen horizontally by dragging them to the top or the bottom of the screen. Currently to drag a window to the top makes it fullscreen, but there is a quicker method to do that: double click on the title bar. And nothing happens if you drag a window to the bottom of the screen, so such a functionality would be very useful.