I think the best designed courses are the ones that put hazards in play to affect the golfers options, not just because. I've played courses with very few bunkers that are just as hard as courses with them scattered everywhere. Grass bunkers, water hazards, mounds, sloping fairways and greens, very large greens, and tree-lined fairways can make for just as much challenge as a bunker shot. Honestly, sand shots don't scare me like they do some. I'd much rather have a bunked lined fairway than a tight-chute type tree-lined tee shot into the wind with water left and OB right. Now that's scary!!!!