Shade provides relief for golfers awaiting on the tee? What a joke. For how long before the shaded spot moves? Unless it's a permanent wall of shade, in which case it's a disaster for the turf altogether.
Dr. John R. Williams loved trees but he had no idea what he was doing to the golf, strategy, holes or turfgrass at Oak Hill. I'm looking at the club's 1977 club history, "From Little Acorns." It has adoring chapters like "Doctor John's Green Mansions" but not one single reference to Donald Ross, the two courses he built or to any of the holes!
Basically, turfgrass and trees compete for the same resources:
air
sunlight
water
nutrients
One of them is going to win, usually the tree, in which case the turfgrass dies. I'm sorry, but it's a pretty simple formula. Not to mention the effects on strategy, safety, aesthetics and the health of the trees that crowd each other out.
That's why Oak Hill took down 700 trees in recent years and why Paul Latshaw's next assignment will be to convince Jack Nicklaus that Muirfield Village is now hopelessly over-treed.
Trees are fine only under certain limited conditions on golf courses:
-deep rooting deciduous trees only
-on north side of turfed areas
-along property boundaries
-in large stands or copses
Otherwise they need to go, esp., all conifers.