Sean
Hidden hazards - I would suggest that a hazard isn't truelly hidden if the surrounding contours give some indication of its presence, be it a burn or bunker or whatever. A real hidden hazard is one where your golfing copmmon sense can't detect it, where there are no tell tale signs by way of contours/swales or even the shape of the hole to give an indication. Have you ever noticed that on blind shots on older courses, particularly on blind drives, there are generally no hazards and that the landing area is generally fairly generous.
Now TOC, as you say, plays by its own rules. That might make it interesting but personally I'm in the camp which thinks it an interesting piece of land with some quirky holes, some great golf (17th) but overall good but not great. The blind drives, lack of definition and hidden hazards that go with that does absolutely nothing for me.
Niall