Pros:
A full-fledged course with flaws, Prairie Center Park (don't use it's initials) is well-kept and well-designed. Concrete tees with full signage on each hole, a back tee on 2, 6, 8, and 18 to add difficulty if you desire (distances marked for each, but only one sign per hole).
The original 9-hole course (1-8 and 18) sets a great skill challenge. Control on 3 and 5, long line shaping on 7 and 18, precision on 2 if it's in the island pin, power required on 6-8 and 18, the only thing really missing is a dogleg, but the short pin on 7 is close to being one
The run of 12 to 15 is an excellent part of the additional nine as they all require more than one skill. Hole 12 needs power off the tee to cross the field, then accuracy as the baskets are in some tight woods. 14 needs power uphill plus rightward movement, and probably a decent skip for a deuce. Hole 15 depends on the pin placement. Either accuracy off the left tee to the small, guarded green; or big power and leftward movement from the right tee. And then there's 13. 13 is the type of par 4 I'd expect to see on a championship level course. Threading the needle off the tee is the only way you'll get birdie, and position is better than distance, then you have to compete with a low ceiling on the long pin, and a jungle of trees with the basket guarded by an evergreen on the short pin. This is the best run of holes on the course.
Cons:
This course comes from the era of "everything's a par 3," when it isn't. 6, 7, and 15's longest pins are up there, but 12 long is the worst offender. Though the course expansion came in a new age of disc golf, the pars didn't get the memo. Speaking of age, the baskets are very aged. A few of the bands aren't level anymore and some welds are starting to rust.
Some bland holes. 1 is a bit boring except the right pin being behind a tree, 9 is an uninteresting downhill shot with a bit of tree cover on the greens and when the trees grow up there's enough of them that the hole will have to be removed, and 17 is a fairly open line to pick up a quick birdie on.
Navigation is rough. The road- and park-crossing transitions could use some signage. 8 to 9, 10 to 11, and 16 to 17 are the worst offenders. The only tee you can see from the basket of 8 is 18. 11-16 are a three minute walk from the rest of the course. I know there's a whole sports complex in the way, but a major fix would be to shift the numbering so those are either the first six or last six holes on the course.
The pin positions for hole 2 and 4 are the same. This makes for several options, but also means that it could get a little dangerous during a busy day or a tournament.
The sports complex gets in the way of a few holes. Soccer fans could be sitting very close to some pins on 1 and 11 (one of the pins on 1 is literally 15 feet from being on the pitch and I still say a ball kicked into the basket should be an auto-win), and you risk tossing into baseball fields on 11 16, and 17. There is also a walking trail that you throw right alongside on several holes.
Other Thoughts:
It's obvious that the expansion of this course was stuffed into an already busy park, which makes some of the issues excusable. If some "next tee" signage were added and a few holes tweaked this could be a great course.
Even with my complaints this is still a good course for beginners who want to test their distance without being punished too harshly, and more experienced players who want some challenge (on the good holes). Overall, with some improvements I could see this course getting pushed up to a 3.5, but without a redesign it won't go above that. Several holes are class, but some of the others are very monotonous. This course is worth a visit or two, but more experienced players are likely to visit other Olathe courses.