Pros:
If you live in Eureka and need to play somewhere, it's in your neighborhoop and is a quick 9 holes you and a couple of buddies can knock out in 30 minutes. It wasn't being used by anyone else either time I have been, so that is a pro, I guess.
Cons:
The landscape is a super-flat course with no variety, no obstacles (save for a few trees to dodge on 2 holes) and the holes are really short. You could probably get through all but 2 of the holes with 1 midrange disc. Almost every hole's fairway (especially on 4 - 8) is a bog of standing water and muddy grass and smells like a swamp. I imagine it drys out at some point in the summer heat, but considering there is no shade, I can't imagine standing in the beating sun to play this course. Also, the tees have become very hard to see because the grass and dirt have kinda built up and half buried them.
Other Thoughts:
I know this review seems really negative, but I've played and enjoyed all 11 of the other courses around St. Louis that I've played. Every other course had some unique and redeeming features that made it a fun game - whereas if all the courses were like Kircher Park, I'd never play disc golf again.