Mac has had it's menu bar at the top since the original as you could only run one app at a time.
Now with large UHD monitors/TVs it's a long way to go if you are using other apps at the same time like working with REAPER and other audio apps, with an HD monitor you usually have the app full screen but now with UHD 4K you can have 4 apps on the screen at the same res.
If you could also have the menu bar on the app also would help considerably.
If you have one app in the bottom right 1/4 of the UHD Mon and you zoom in to that then having the menu bar will avoid panning to top to access the global menu bar.
Even if it's an option to show as users with smaller monitors may not find it useful.
Full Screen