[itsme]

The field order in  the song editor window is imho a matter of personal taste. So a real improvement could only be achieved if it is made configurable, e.g. by adding sliders to the "configure fields" window as we see them in the setlist editor window.
But I'm not convinced that the usability improvement is worth the effort it would require.
@Harper: removing unused fields via "configure fields" is not enough for your needs?

@Graeme: Harper talks about the song editor, "Tab Order" configures the sequence of the tabs in the library screen.