I have to agree with Conf.
If you are forced to fly a "crew" jet with dual controls, then having the visual and mechanical duplication of control stick/wheel is one addition to "awareness".
The implementation of such systems will be more complex than what the 'bus has, or the Shuttle or the Viper that I flew. Nevertheless, I can appreciate the added awareness factor.
All that being said, I still have a problem with several accidents where basic airmanship played a larger role than mechanically connected controls.