Well Tom, I was wrong. I checked the better pictures and talked to our longtime superintendent. Originally, the 10th and 17th holes at Pasatiempo shared a common fairway, with only a couple of isolated trees near the 10th green. That openness created a lot of very interesting angles and approaches to both greens. But 10 was originally a par 5, with the tee on the other side of the road, so using the 10th fairway was an option for the second shot, and it was a smart play when the pin on 10 was tucked on the left side. But with traffic to the Hollins House along the road, in post-MacKenzie years the 10th tee was moved to its present location, and changed to a par 4, which made it much easier to hit tee shots from 10 into the 17th fairway. With increased play, that created safety issues, hence the trees. So I think I agree with you that, with the tee in its current location, the trees make 10 a better hole. In the old days, with the tees back, and with fewer players, I can see how 10 without the trees would have been an even better hole...but that era has passed.
Rob