Ian,
My third sentence was referring to the non subtle first suggestions....not the subtle ones. Sorry for confusion.
The problem I see with single bunkers "forcing a decision" is that they may only force a decision for 1-5% of the players on any given day, who hit it within that critical distance, after figuring wind etc. It seems more and more we need to have long cape type hazards if we want all (or most) players to have the same thrill.
I recall a bit of discussion here on the "subtlety" of a cape hole not using water. Tom Doak had an example in Anatomy of a Golf Course of a second shot carrying an angled ridge, cut at fw height, as opposed to a split fairway with steep rough bank in between. That is the kind of feature I was referring to as subtle. After thinking about that, I went back and looked as some of my double fairway holes, and realized I could have achieved the same temptation with just a slightly wider than normal fairway and a change of grade to separate landing zones you might aim for.
Of course, the next level of discussion would be, "what type of course benefits from subtle?" Most would tend to hit them over the head on a once in a lifetime/once a year resort course to make sure they "get it" in their one play. Private clubs and even muni's expected to see mostly repeat play probably do better with subtley in conceptual sense.
Pat,
I have relayed discussion with Tripp Davis whereas he likes long "bow tie" type greens at 45 degrees angle so you have to match up distance with direction to hit the green. Honestly, I don't see that as any temptation, just shot management, and its hard, not tempting!
Even any angled green tends to set up a draw or fade, and you have to judge where to aim, but aren't tempted to do much other than the highest percentage shot.
I wonder if the inherently bigger target and sub targets of a fairway works better with the angles than an approach, usually with one general target?