Oh, I have another idea for a park too- a botanical gardens. So, all in all, we'll have 8 parks:
-Nature reserve
-Ammusement Park
-Zoo
-City Park
-Water Park (also avaliable in winter maps)
-Golf Coarse
-Snow Golf Coarse
-Botanical Gardens
Or maybe, merge golf coarse and snow golf coarse into one type of park, so that way, we can have seven parks
Also, there should be the ability to build minigolf/putput coarses