This is a good question and we have covered it before, but no so 'head on'
I think Mark has a good point on hazards as do others especially when it comes to options. From my perspective it is about choices, options that are obtainable and decisions that the golfer must consider given the weather conditions of the moment and their skill. As far as hazards go, they don't have to be obvious or set as 'defined' hazards as we know them. They can IMO be implied, suggestive or partially obscured such that the player isn't totally sure if trouble awaits for this will surely get their mind wandering. I don't mean blind conditions, but the door should be open for 'hazards' like exaggerated, or creative ground contours that at first glance appear to be a green light and safe from the tee. Or vegetation, such as heathland combined with contours that slightly mask the start or extension of a fairway, or where a actual hazard does lie..thereby luring the player into a false sense of security. All this to me is part of the challenge or what is architecturally difficult in the golfers mind.