Winter park uses this approach towards their 'big' park, works out pretty well too. there are other parks on the mountain with beginner and intermediate features, but their big park is restricted.
Restricting park acces has it's positive and negative points, it definately cuts down on beginners dangerously cutting you off while your trying to hit a feature and make the park less crowded. This being said, it also can discourage people from entering it that are working their way up to the bigger features. It's also another cost added to an already expensive sport and another ticket that HAS to be shown everytime you enter the park. Other - are hiring another employee(s), room on the mountain for a seperate park, what days it would be open, more + Give sponsors more exposure, it allows for progression, and reduces injuries.
With the examples of Whistler and Winter Park this application of restricting park access has worked out well as far as my knowledge goes.
Does anyone have any firsthand experience with this not working?