Replying to Closed Parks

Have you park managers considered closing off the parks? Just a thought but when Ive been to whistler the main park had fencing around the jumps so that families, small kids and people that straight up should not be hitting stuff thats over their head cant ski into the landings. they can still watch, and then there is a more tame park for those that arent going to hit 40+ plus jumps. And there is an entrance at the top where you have to show a park pass which is say 10 bucks. I dont know if you guys think this is a good or bad Idea but it certainly seemed safer.