Peter,
I'm going to agree with that sentiment regarding width. Tara Iti is a course from my experience of several rounds there where the width is really needed. Even for the good players. The wind blows pretty good there, I didn't have a round without it, the same can be said for other great sites Tom and his team have worked on; Pac Dunes, Old Mac, Barnbougle, Ballyneal etc.
I always feel like I've not studied the courses enough - mainly for the lack of rounds there, I've had 4 at most that I've mentioned though only two at Barnbougle and I know how this sounds as it was a huge privelige to have the opportunity but it's just not enough to be able to learn and even notice all the really interesting and fun aspects of the courses.
What you notice first at Tara Iti is how fast everything plays and I don't mean putting surfaces. The course seems very long from the back tees, part of that is because it's in yards and I'm use to meters of course but the other part is that the balls roll on so while this looks very green and surreal that is I'm guessing an aspect of the climate there. This width you mention is greatly needed. With all that sand I was amazed at how little I found my ball in it with the wind I had. In fact only a few times in a few rounds.
Ally,
I've yet to hear about someone going there that didn't find it natural. Definitely tons of micro contours as you suggest and if those were all shaped then indeed that was done by the hands of a magician because I can't remember a single hump that left me feeling, WTF?
I guess it's really about as fun as golf can be. On top of that...at least when I was there. No bugs! No flies, bees, snakes, scorpions, mosquitos, you name it. No idea why but that alone was surreal. Usually there is something hiding to protect the beauty ha ha.