To be honest, in the american style, once you have rough bordering each fairway, the fw bunkers are pretty small potatoes. You might have 3 acres of rough and 3,000 SF of bunkers, or about 2% of the total for punishing a bad shot.
Now, in all short turf, like the former Augusta, or many Scottish courses, a well placed fairway bunker or two might mean the difference in how you play the hole. The strategy of the things reduced greatly once rough became standard.