Mike,
I agree with mixing it up over 14 long holes. Certainly, if I had calculated a "perfect distance from the tee" for the mythical good player, but found a natural hill to fit a bunker anywhere within 20-30 yards of that, I would put it there to be more natural, knowing not all players hit the 283 typically used for the turn point, nor does the wind blow the same direction all year.
Still, I think most of us start with some kind of philosophy on basic hazard placement and vary from there.
I say that because I spent the last five years of my career doing many bunker reduction plans, including some on my own courses. The DOG and super would take me out and show me bunkers with no rake marks, sometimes with the comment that "they haven't seen action in years." Then, they are put on the reduction plan to save money.
So, I think there should be some theory in place that makes most bunkers "in play" for the greatest number of golfers for some type of strategery. They just cost too much to build and maintain for all but the top courses with no budget problems.
And, proportional tees do complicate that and architects, in my opinion, need to reconsider fw bunkering now that we aren't expecting one landing zone as we used to (often wrongly, LOL) assume.