Old Silo is a fun design, but in my experience, the course conditions can be hit or miss. I've played the course probably four or five times and there were a few times the greens weren't great and the bunkers were a mess. However, it's still a fun round.
There are some pretty big elevation changes for a few of the drives and approach shots, many of which offer great views of the hole and/or course. There are plenty of trees pushed out around the edges of the course, but they're not really in play, which in my mind is a good thing.
The silo on No. 16 is neat and only comes into play if you severely pull your drive, if I can remember correctly.