The personalization needs improvement. When trying to move a field the user always faces a lengthy process if you use drag and drop. I know the arrow keys work better. But the drag and drop is painful.
You need many attempts to finally get the field in place. Users also need time to figure out you should not drag the field header which is intuitive but the field content. That I had to explain so many times. Nobody does that right. User friendliness of the dragging of fields to other positions is far below acceptable.