Personally I am tired digging through my assets folder to find the scene I want to edit or add to project settings.
I think it would be great if the editor had a seperate window where you can manage all your scene files. I am thinking of a window that displays all scenes in the project folder so you can choose to edit, delete, add to build settings etc.
This feature would be really useful when you have complex asset folders with a lot of folders and subfolders. Especially when scene files are not in one folder, such a tool would be a great help!
In my opinion this is a feature every game engine must have built-in.