Sven,
There are more in your camp than mine. For some reason, it seems like the severity of the Jones redo left people with warped and sentimental recollections of the earlier version of the course, which was actually quite bland.
In terms of tree removal, holes 3,4,7 and 8 were all materially aided by tree removal. 8 in particular was a huge and overdue change. It was a zero hole before and is no pushover now. #10 had some removal, but I think the hole would be a lot better if they got rid of most of the trees on the inside of the dogleg. A fair amount of tree clutter was removed short and left of 11. A ton Of trees and undergrowth was removed on 13 short of the green which looks much better. Finally, there was modest cleanup on 16 which is now the prettiest hole on the course.
To me, Cog is as good a course as Conway Farms, the course that replaced it. Conway has planted hundreds of perfectly useless trees in an avowed effort to frame greens and for fairway separation. Much of the original somewhat naturalist feel of the place has been relentlessly dumbed down by the membership which seems bent on making it a parkland course. As for difficulty, I can't imagine that the pros will do anything but kill the course, which is probably what the whiners wanted all along.