I don't really see how Mill Creek Valley Park fits the definitions of protected area class 5 according to the wiki, but if that is how things are tagged elsewhere, I understand it. We haven't come to a consensus on the street name Sites mapped as parks, however. I have no idea how to tag them, given that the Township calls them parks as well as "undeveloped lands", and not all of them are mapped right or at all:
Merion Square Road site is missing, but it's merely a forest on a hill bordered on three sides by street.
Righters Mill Road site, just south of this note, is mapped as part of Gulley Run Park.

@dannmer Idk what you used to redefine the boundaries of Eco Valley Park, but it is now smaller than how the township defines it according to the 2020 map. The Township also claims that Lewis J Smith Park encompasses the pool and roller hockey, and Fuller Tract (unknown type) connects Eco Valley Park to Gulley Run Park.