"However, the bank angle increased continuously up to approx. 22°. With the commander’s call out :“I can’t do anything more“ the first officer took over the controls with the words “I have control“ and pressed the TAKE OVER PUSH BUTTON."
If I understand your brief explanation correctly then you are suggesting that PF keeps the PM informed of his SS movements verbally, in order to enhance their mutual SA of the control input?
If they had active SS fitted, then the cross wired controller's input would have been cancelled out by the other side's controller and the problem recognised during taxi checks with Zero roll commands. (More easily recognised than Left / Right confusion).
http://aviationweek.com/technology/a...mmercial-debut
But you're right, why should we discuss ideas about how to improve such a perfect system.