I have touch screen, but not touch-external-screen. It will be great to have option to swap windows from selecting screens. For example, from builtin screen goes onto external and vice-versa. Additionally, windows will be resized to took the same percent of previous screen size, and repositioned to (X1,Y1) be placed on the on pixel placed same percent of screen X-axis, Y-axis of previous screen.
Thanks to that, I could move windows I would not working for now to external screen and window, which needs attention to touch screen.