Pros:
Amenities, views, course upkeep
Other Thoughts:
The course at Veterans Park is a high-end SoCal disc golf experience. With an excellent onsite pro shop, lessons available from the onsite pros, top-end signage, concrete teepads, a large area of the park devoted strictly to disc golf, an easy to follow color-coded system to get from hole to hole, and a bunch of broad views, you'll be hard pressed to find a better overall disc golf outing in the whole Los Angeles sprawl.
The course starts out on grassy, flat, groomed park land, which does unrealistically set expectations a bit. After hole 4 you move down into the more dirt and mulch area of the park, but the advantage is that elevation becomes more of a factor also. Sylmar is an older course, and thus is not particularly long, but does have plenty of fun shots, downhill, uphill, and just among the many large trees. There are enough trees to keep you honest, but you don't need a variety of shots to succeed out here - driving long enough and for the most part straight is the main thing. Beyond the pro shop and other amenities already noted, the two features that stand out are the nice views of the valley from several holes, particularly #11, and then the several uphill holes, which add a good bit of challenge to an otherwise par 3 course.
While Veterans Park has only one set of teepads, multiple pin placements will keep the course fresh for even regular players, I'm sure. It's the kind of course most of us would love to have as a local course - you can buy everything you need right there, it's nice looking, the baskets can be moved around as needed, you don't have to share the space with other park users, and it's kept in great shape. I'd put this course at or near the top of your SoCal wishlist if you're planning a visit, and I'm sure all you locals are grateful to have such a nice course tucked away out there on the quiet edge of the L.A. megaopolis.