The PGA TOUR's tolerance for hazards in the middle of the fairway is near zero.
Ever since players started following the Mark Broadie paradigm of aiming 32.5 yards away from hazards, they've decided that anything in the middle of the fairway is "unfair" because they can't aim away from it.
The Tour's design arm reinforces this preference, telling host sites they shouldn't have hazards in the middle of the fairway "because the players might not like it," leading to negative press for the event, or worse yet, telling sponsors the players might choose not to play the event next year if they don't like the course.
I've been working on two sites for Tour events, Waialae and Memorial Park, and this no-no has been brought up at both of them. At Waialae, we had discussed putting a Principal's Nose hazard in the left-center of the first fairway [10th for the Sony Open], but after feedback we decided to make the bunker jut in from the left rough, instead.
At Memorial Park, it's not even a bunker . . . I built a sharp undulation in the center of the fairway so players would be forced to choose between the left side [bad angle] and the right side [where there is a tree in play]. The TOUR has suggested multiple times that we should eliminate this feature because players won't like it. My client, who's the sponsor, backed me up on it, so it's still there, but the TOUR officers bring it up every single time they visit; they are really not used to anyone disregarding their "advice".
I admire Ian's approach, but when you are dealing with the PGA TOUR, there is no such thing as long term. If players don't like the feature, they will be talking about modifying it next year. Of course, they'll still be talking to my client, so there's a chance my feature will get more than a one-year trial, but I wouldn't bet on it.