Too late to save Copper, at least on Sat. If you want a crowd free experience then ski during the week. Forget Saturdays or holidays. The only way to help Sat. would be to put a reservation system in place. If you are staying at Copper avoid the lower mountain and Timberline and you won't be in crowds.
You mention Pico but I'm not sure if it's your home mountain. I think he wants it to be more like that. Limit the number of days for Ikon passes. Like Pico, Copper is only a partner but has no restrictions or limitations. Not sure why but if you check other well known Powdr resorts like Snowbird, Mt. Bachelor, or even Killington-Pico they all do.
Winter Park gets mentioned with Copper a lot. Winter Park is a different situation than Copper. They are controlled by Alterra.
Sorry, definitely struggling with the whole skier visits are flat. At least for Copper. I think the combination of people moving here, people bailing on Epic, and Ikon are driving visits up. I wouldn't be the least bit surprised to see visits up by at least 12% this season.