Pros:
The front nine! Very interesting shots through wooded areas with a fair amount of elevation change. Nice and interesting pin placements that make for challenging shots that require a good amount of precision.
Just an excellent set of 9 holes well laid out in some great terrain.
Cons:
The back nine! Pretty much wide open, except for some out of bounds areas that are more frustrating than fun. One shot goes right along a road, where if people are parked on the side of it are right in your flight path. You have to play it safe just so you don't hit someone's car. Another couple holes follow a fence line where if you are inaccurate, you're not going to retrieve the disc as there's a 6' fence with a 20' drop on the other side of it into what looks to be some sort of abandoned water detention area.
The back nine also is just plain uninteresting, consisting of nearly all pretty wide open long shots, most of which are flat. There are some cool giant trees, but that's about the only high point.
The course also suffers from vandalism/neglect, as there is garbage everywhere, and many of the tee signs are either missing or laying on the ground. It's a bit tough to find your way to the next tee some times (we never did find the tee to 11, and just played it from the 10 pin).
Other Thoughts:
My rating is mostly about the fun of playing the course rather than the condition, as garbage can always be picked up and signage replaced, but the course layout is what I care about. Once you know a course, despite the signage (or lack of it), you can still have fun playing a well designed course.
It would actually be a great course if the front and back nines could have been mixed together. A wooded shot, an open shot, a wooded shot, an open shot, etc. However, as is, you play this really fun and interesting front nine, and then get dumped into this barren and bland back nine. I'd still go just to play the front nine though, as I really had fun on that portion of the course. If I could just rate the front nine, it would get a 4.5, but the back nine is closer to a 1.5 for me.
For those worried about the area, don't worry! No, that part of town isn't great, particularly after dark. But the park is fine in the daylight. I suppose if you're from a nice suburb, the drive in might intimidate you a little, but it's no big deal.
As a bonus, Pigwich is just north of the park, so do yourself a favor and grab yourself a sandwich afterward! It's a real hidden gem of the area.