JakaB, Steve, and Slapper all make good points that there is a very thin line between a visually dynamic bunker that is there as a "novelty" and a bunker that is more in the historical spirit of the game as a very "uncertain" place of punishment and repentance.
I've seen both, and sometimes the distinctions can blur. Brad Miller makes a good point about Fazio, because he also tends to use steep, sand-faced upslopes oftimes, and they can certainly play as hazards (most complaints with his bunkers have to do with positioning and context as opposed to the difficulty of the bunkers themselves, except in his "restorations").
But, when I hear complaints that a particular bunker is too severe, I also go back to look at old photos of some of the bunkers that existed or were built early in the last century. My LORD, those things were fearsome, and that was before the advent of 60 degree wedges, and such.
You know, we go on and on about reintroducing strategy in the game, and courses are lengthened beyond 7,200 yards, fairways are narrowed, roughs grown, trees planted, greens cut to dangerous levels, and water is increasingly used to create "challenge".
Yet, does anyone else find it quite ironic that bunkers, which were historically used to create strategic interest, have generally been neutered to a great extent in modern golf through club technology, assiduous conditioning, consistent sands and other bunker materials, shallowness, complaints about lack of fairness with anything resembling less than a perfect, flattish lie, cleaned up edges and surrounds, and even watering to create "firmness"?
When it's preferable to be in the bunker than in the rough, then they are simply serving as visual color contrasts.
And THAT is my ultimate definition of eye candy.