Trees in the middle of the fairway my #2 pet peeve on course design. I play a couple with them & one is a 469 yard par 4... like that alone isn't tough enough. I'd have some two-tiered fast greens, all-carry, well-trapped par 3's... none over 200 yards. Reachable par 5s, with demanding 2nd shots for the big hitters. It wouldn't be too long with risk/reward aspects for the big hitters...fairways would tighten up with traps/hazards at 270-310. Yes & a ditto on cold water & cups on every hole, although I've taken to bringing my own after being disappointed so many times in that respect. Oh and my #1 pet peeve on course design - any greens-keeper who cuts a hole on the side of a hill would be strung up by the nearest tree(just kidding card... sort of ).You should be able to stop your ball in the general vicinity of the hole with a well struck putt from anywhere on the green.