With that wide open space of grass in your park, I think you could find a more efficient usage of space, and as I stated in another comment, more walkways should be added to ease traffic on the grass in order to decrease maintenance. Speaking of maintenance, this park is in a desert climate, and a substitute that would use less water would also lower the amount of maintenance needed to keep Regular Park looking pristine. I really like the addition of a dog park though, as this area is primarily residential, so literally the "whole family" (no pets left behind) could go and visit your park.