The content area looks good enough, probably better than before. But what is the point of having a single menu with a huge nested menu tree and keeping the maj

The content area looks good enough, probably better than before. But what is the point of having a single menu with a huge nested menu tree and keeping the major part of the title bar empty? If I enable the separate menu bar, the menu bar and project bar take as much space as both bars plus the tabs did previously. This feels like trying to be stylish at the sacrifice of usability. Here I clearly prefer the old UI.