Pros:
Riney B is an excellent and challenging course. It has tons of variety and requires just about every shot you have, plus some you don't have. It has just about everything any golfer could want: woods, open holes, wide open bomber holes, tigh, technical holes, distance, and some ace runs.
With 24 holes, there is enough variety to keep everyone happy. The course doesn't really favor any one type of golfer (backhand or forehand, righty or lefty).
The course also has awesome tee pads (6' x 12'), amazing tee signs, and, for the most part, has short walks in between holes. In addition, for variety 12 of the 24 holes have either dual pin placements or dual tee pads.
The land itself is also quite beautiful. There is a lot of wildlife (icluding a beaver family with a huge dam on the creek). And since the park is not really used for anything else, there are no joggers/skateboards/baseballs/etc. to have to worry about.
Cons:
Since the course is still relatively new, there are many things that still need work. The course is somewhat beat in, but there remains a lot of schule, some of it pretty punishing.
The course lacks amenities that every disc golfer likes to see: garbage cans, benches, water, bathrooms, a shelter, a kiosk, etc. Many of these are on the way, but as of yet are not out there.
The course also is not for everyone. It is not a beginner's course. It is long, with 24 holes that do not loop in nice pairs of 12. On hot days for rec or novice players, Riney can leave you feeling like you have been beaten up.
Lastly, because the park itself is a retention area for a creek, several fairways are often wet. Compounding this problem are the beavers, whose dams have already forced the redesign of the course once, and are currently busy cutting down trees and damming up a side creek. This has added to the water issues on a few holes (notably 14 & 15).
Other Thoughts:
The course is great already, with lots of potential. It is challenging and constantly improving. It adds a great, new element to disc in Central Kentucky.