If the only reason to tag this place leisure=park is for consistency with other Westchester-managed parks... that's not great.

I mentioned a couple of wilderness parks I'd left as leisure=park. If I'd had the itch to reclassify them, I'd 1) consult the current documentation 2) try to get a local consensus from other mappers -- especially the ones who'd done the original tagging, if still active. That's how a cooperative project like this should work. (Obviously it's different when the tagging's clearly incorrect -- if these had been tagged as zoos, for instance.)