To reconfigure, it takes too long to scroll fields into position when reconfiguring, especially when using large tables and making multiple changes over time.
I suggest a sequential numbered listing of all fields in the Elements from top to bottom, starting with "1", there should be a button to "GO TO Before #" one can select once the field to be moved is highlighted.

Also Element window is too narrow when one has long field names, such as when using Source from Views.
I suggest a drag arrow on right edge of the window to resize and widen. better use of time instead of scrolling left - right to see the entire name of field.