Grew up in Colorado and have skied basically everywhere in-state and changed home mountains a few times depending on where I lived. Over +30 years I've seen the Colorado ski culture evolve a lot. The mountains along the I-70 corridor (with only a few of exceptions) have become very corporate and homogenized thanks to the Epic and Ikon. The massive crowds have really killed the old vibe in places like Summit County, and I pretty much always avoid the big resorts on weekends unless I have a place to crash. The terrain at the big resorts is still great, but these days I've found myself enjoying the smaller local mountains a lot more (Loveland, Sunlight, Monarch, etc.) because there are fewer people and old vibe still lives on.
The only places I've skied outside the state are Whistler and the Monashees (heli skiing). Both were great experiences.
Really, there a lot of places I'd love to visit. Big mountain is my jam these days more than park (I'm old). Alaska (Alyeska and Eaglecrest) are at the top of my list. There are a lot of places out west I want to visit just to experience the terrain; Jackson Hole, Alta/Snowbird, Revelstoke, etc. Wouldn't mind also visiting Vermont/Maine or the upper peninsula just to say I've done them. Outside of North America the Alps and South America are obviously places that'd be great to experience.
Somebody try and sell me on California. I've never had much interest in visiting places like Tahoe and Mammoth because I feel like the crowds and vibe are gonna have a lot in common with the things I dislike about the I-70 corridor.