Make the menu bar configurable
I realize that different people use the app in different ways. For me, Copy and Paste are basic so it’s a nuisance to have to access them through the ... menu. So how about a preference pane to let the user select which buttons to include in the top menu, up to the available space (so the user would rank them in order of priority). In full screen mode I see a lot of empty space on that menu line. Any button bumped by limited space would be switched to the ... menu.