Derek,
I have hit more shots than maybe anyone to the "new" back left pin on 2 West. The elm tree doesn't bother the shot to that pin unless you're coming in from the extreme left and inside of maybe 100yds. With the new tee at 455, that distance will become rare.
The tree will take an interest in a shot off-line left, even from the right side. As was true with the late Great Elm , however, it is usually a benevolent carom onto the putting surface that is your penalty.
The position does reward a lower shot that continues pin-ward after touching down. The "ravine" actually has a crest as it nears the pin, inviting, you might say, aggressive approaches but sending soft-spoken suitors back down the path.
I have some pictures that you're welcome to post. Let me know.