The auto wing sweep was not the improvement you might have thought. Once you hit the speed at which a move was scheduled the wings would start to move and the whole transition from, say, 25 to 45 WS would be completed regardless of what the speed did in the interim. So, if you were turning with someone, did a quick unload to gain a little energy and hit the magic number, the wings would sweep to 45, regardless of the subsequent pull and re-commit you had performed. The trial referred to (can't remember the name) showed a loss of turning performance and a huge increase in wear in the flap motors and so on.
A nice idea, but the implementation was not great.