Trees are a great feature so long as the course always understands that trees grow tall and wide over 10-20 years.
The trees encroach the line of play and the option to go over them is limited only to the power players with length. The average golfer has less options and I feel they can really hurt a good gof hole over time as the trees mature until one day the chainsaws come out.
Me and my home course are a great example of this.
Ten years ago, when I moved to Topeka, the 432-yard 11th hole had at least three potential routes of play--despite the presence of huge trees on inside of the dogleg.
A long hitter could cut the corner and leave himself ~150 yards.
A sharp draw around the corner could get you within 180.
You could skirt the trees with a straight ball and leave 200-220.
Even a short-hitting slicer had a place to put his tee ball on a flat lie 250 yards from the green.
At age 50, I had just enough length to cut the corner with a (prevailing) tailwind on my best days. I could usually pull off the draw or straight ball.
Today, I'm 61 and can no longer muster the carry and the 100-foot oak on the corner has broadened so much that it's almost impossible to get a ball around the corner.
It's only a few feet wider, but now all the long hitters coming in from 150 and everyone else is outside 220, usually from a deep swale.
A former member friend of mine played it for the first time in several years this summer and said, "You can't play the hole the way it was intended anymore."
Ken