For the general public this is a great improvement, people do get tired of driving and end up forcing them selves to drive, at least with this self driving technology it will make owning a Lincoln MKZ better. I wouldn't care for it tho, I love driving.
I think drive assist more as a safety precaution, which I think is a good thing. This feature should be used more as an emergency function like airbags. For example, when airbags deploy on a crash, the drive assist should only be used, if the driver happens to fall asleep and the car centers itself.
I wouldn't want this function to be relied on by drivers to steer. I feel it would make drivers even worse and a lazier drivers.