Pros:
The pictures of the course don't do it justice. It really is a beautiful course (when it's green anyhow) in an absolutely beautiful surrounding area. The Cache valley is a fantastic area, perfect for disc golf courses.
A lot of work has obviously been done on this course and it shows. Someone has gone to the effort to (for the most part) level off the dirt tee pads and provide some pretty good signage, which is important given the first con I mention.
The beginner and pro (B and A respectively) tee pads for every hole are a nice touch. Some of the A shots are quite challenging which I think adds to the rating of the course.
It makes good use of the terrain, not that it has a lot of uphill/downhill shots, (Holes 1, 7 and 8 do, mind you), but it gives great risk/reward opportunities on almost every hole. No more than hole 9 where you throw over the gravel pit of doom!
Cons:
Although I think this is a very good course, it certainly has some little issues.
First, there are several blind shots that, if you aren't familiar with the course, can prove exceptionally difficult. Hole 3, 4, 5, 6 and 7 come to mind, but only when throwing from the A tees. This is where the risk/reward bit can come into play, for sure, but it's just a touch excessive on this short little course.
A couple holes cross each other, 5 &6, which is never a good thing on a disc golf course. They aren't too bad though.
Dirt tee pads are a little uneven. Cement pads would go a long way.
As mentioned, there is a lot slippery hills. It's easy to lose your footing, particularly on holes 8, if your disc goes left, and 9 if you can't clear the chasm, but in general footing can be tricky on the course. I can't even imagine how horrific this course must be in inclement weather!
Other Thoughts:
Someone mentioned that taking a beginner here could turn them off from disc golf. I think that is pretty accurate. It is a tough course, particularly from the A pads. My wife has been throwing for a few months and she was put off after three holes.
Other than figuring out something to eliminate the crossing holes I think the best improvement this course could see would be a couple Eagle projects to install cement tee pads.