Pros:
Shawnee has a well-designed and maintained disc golf course that gets lots of play from the KC area. While usually busy, it is a spot that provides challenge, but nothing that would scare away a beginner.
Concrete tees on all 18 holes, Holes 1 and 2 have longer tees. All the main tees have excellent signage. Baskets are DD Veterans that do the job as well as any other Veteran... so not great but still passable. The long pins on 1, 2, 4, 9, and 17 are set permanently with the old Mach 3s.
The course has a practice area, not just a basket... however it does have three of those. Two old Mach3s and a Veteran, each set about 125ft from each other in a line, there are brick markers for the 10 and 20 meter distances on the furthest two from the first tee. Putting practice and short upshot practice are both possible.
To the course itself, the first six holes are excellent, winding in and out of the treeline, a big culvert to throw over on 4 with a hole that finishes right, the rest have some very tight gaps (Hole 1's 60ft from the long pin or 6's right off the tee) or are tight tunnels (2 and 5), the beginning really is the highlight of the course.
More elevation is used on 12-18, booming downhills on 12, 14, and 16 are offset by uphills on 13 and 15 that require a lot more power than the distances on the tee signs would lead you to believe. 18 is one of the best holes on the property, with thick trees all the way down on the left and having about a 15ft drop in elevation to the green, both pins are equally tough to stick.
Cons:
The more park-style holes of 7 through 11 are the weakest part of the course. Lines are either sharp doglegs (10 and 11) or open bombs off the tee with a little work to do at the end in the trees if it's set in the longer pins. But with little elevation (except hole 9) or shot shaping to speak of off the tee, there's not a lot going for these holes. 12-16 suffer from this to an extent, but are saved by their elevation.
The rough is nasty in the summer. 4, 8, 11, and 17 are the scariest, but there are plenty of other spots to watch your disc take its last flight.
Crossing the road from 3 to 4 and from 18 back to the parking lot isn't ideal, and teeing over the walking path on 6 can cause a short backup from time to time. Nothing too awful, just worth noting.
Other Thoughts:
My opinion of Shawnee Mission has greatly improved since my original review (which I'm sorry if you took the time to read, it was awful). The weaknesses of a lot of holes are saved by trees or elevation to keep most of the course fresh. There are definitely better courses in the area, but if it's nearby SMP is definitely worth a stop.
An update planned for 2025 will add 18 new holes throughout the park are and split the now 36 holes into four 9-hole courses.