There are a few things that make a disc golf course good and/or great. Amenities are at the top of the list.
#1 Is there ANY parking. Not just a wide spot on the side of the road that goes past the course. See Hagg Lake. This can be mediated somewhat if the park is close to public transit, but I can't find many local courses that meet that criteria.
#2 Bathrooms. Sure I can pee standing up but ask a female golfer how much they like ruffing it. If you don't have bathrooms then you'd better not complain about players urinating in the bushes. See Pier Park.
#3 Other amenities. Like camping areas, shelters for group activities or fire pits etc. You may only play dg in the nice weather but some of us like to play every weekend year round.
List of amenities at Forrest Park = ZERO.
Why is Milo the amazing place that it is? Amenities.