Scott,
I don't know if 14 has ever been shaped either, but the basic diagonal ridge had to have basically been there. And I don't know why most sites wouldn't have slopes somewhere that could be effectively put into the design.
Many gca's believe that such contours "hurt the golfer" and that the course should be receptive and not hurt the golfer that way. My mentors believed that subtle contours that deflected a ball that landed in the fw off the fw were in effect blind hazards, and didn't do them. And most golfers are somehow believing (as they do with greens) that if it lands there, it ought to stay there, I guess like coming home and plopping on the couch to watch golf channel for the night......for many, a shot that is on the target and then leaves it honks them off to no end. For most courses, the idea of anything like that slowing down play is abominable (sp - been a long time since I used that word!)
On the other hand, if the fairway is wide enough, and a bunker might have been put wherever the ground slope is with a narrower fairway, then the hazard value isn't any different, and the golfer learns his way around the course. And all a more natural and cost effective solution on most sites than an artifical bunker, even if there is grading to enhance the desired effect.
Given the cost effectiveness of no fw bunkers, It think a return to different areas of fw being targets and others being hazards is probably in the cards.