We have been getting tons of requests for new parks and will try to get to all of them eventually. They take time to make so we are a bit backed up but we have been making some progress. Recently we've added Adirondack Park, Rocky Mountain National Park, Virgin Islands National Park, and Isle Royale National Park.
In the next couple of weeks we will be adding five of Canada's National Parks, Everglades National Park, Channel Islands National Park, among others. We still want requests, consider them votes for prioritizing which maps get made soonest. Thank you for all of your interest and we hope you keep checking back to see when your favorite parks get designed.