Pros:
1. Variety. Great variation in shot type required off the tee, but recreational-friendly enough that you usually can get up and down for par if you screw up. Multiple pin locations on many holes (#6 has three locations, with the deepest making it a legitimate par 4 at 403' uphill to a plateau green surrounded by guardian pines), 2-3 tees per hole (#2, #13, #17, and #25 have champ tees). Water in play on many holes, mostly in the form of the creek, but Lake Michigan looms on #22 (though admittedly you'd REALLY have to overshoot to wind up in the lake here!) and serves as a picturesque backdrop on several other holes. Hole #10 in the alternate position is a pretty open 525' RHBH anhyzer gently sloping down into a protected green, #13 has a pin precariously placed near the same sharp drop-off you throw down for #14 (old #9a), plenty of ace runs abound, and in the new 27-hole layout this has moved a great deal away from being a "deuce-or-die" course. Hole #22, one of the new additions, will quickly become a famous hole in the area (if not the country), with a premium on the landing zone off the tee before reaching a sharp dogleg down to the aforementioned green sitting on Lake Michigan, with an elevated basket perched atop a lighthouse...just awesome, and a great way to showcase the region's history not only in disc golf, but also in the Great Lakes Maritime industry!
2. Scenery. As mentioned, great views of Lake Michigan and a nice overlook from #14's tee. The creek is impressive after a torrential rain (not so much if your disc happens to find it on one of these days). Lots of wildlife and a good variety of trees and foliage.
3. Manitowalk in the Park. This is by far one of the best-organized and most fun tournaments I have ever played, with a field that fills up every year, great player's packs, and a lot of awesome people involved (including the sponsors). I realize that an event at a course doesn't necessarily contribute to how it plays during a recreational round, but if you just stop out during the days of the tournament and check it out, you'll see how much people love this course.
4. Maintenance. There is a fair amount of trash out here on any given day, but with how popular it is and with how much the locals love this course (and thus don't want to see it scrapped because of litter/vandalism), the upkeep out here is far better than one might expect from a park that gets so much use (including all the non-disc-golf activities at Silver Creek).
5. Location. They probably couldn't have picked a better city park to put this course. Very easy to find if you're traveling up County LS (which leads straight into Cleveland if you're planning on hitting LTC and other area courses), though it will definitely take you a little longer to find, especially on your first time out, if you're coming off of I-43. Just follow the signs for UW-Manitowoc; it's next door to their campus.
5. Dual tees. Your round becomes exponentially more difficult when you transition from short to long tees. On many holes it seems like a completely different hole rather than just a straight extension back from the shorts. There are 4 champion tees out here, too, as mentioned above, if you like some extra challenge (especially spices up the rather bland #2, and #25 is given a total facelift when you step from the short/long tee area over to the champ).
6. Baskets. The Mach III baskets are in good shape.
7. Navigation. Good signage, and with all the new holes that have been added, "next tee" signs and other aids have been put into place to assist in getting around.
Cons:
1. Erosion. This course at just over 10 years old is starting to show signs of its popularity, as well as just natural elements taking their toll. Several fairways on the Front 9 have changed in the past season or two due to large trees or branches coming down, and there are plenty more mature trees that seem to be in their death throes. Inevitable, and hopefully the design will change in strategic ways to keep this a great course while preserving the flora.
2. Vandalism is apparently a staple of this park's diet (not surprising with the high amount of chucker traffic). It's a multi-use park that is popular with a variety of crowds, and on busy days (especially when soccer games and picnics are going on) you may have to skip a few holes like #2, #14, and #15.
Other Thoughts:
One of my favorites. Definitely check out Manitowalk in the Park during July; if not to play, at least to watch and witness the supreme organization and positive feedback pretty much everyone will give. I'd love to see a few additional permanent holes added out here, as there is still plenty of land and even another 6 or 9 doesn't seem completely out of the question. However, it seems that erosion control will be a driving factor in any immediate redesign, so tweaking existing holes may take priority over any rumored course expansion.