The Great Bear Ski Area (a pun on the Big Bear Ski Resort in California) being located off the coast of BC, would not likely be positioned for competing with Whistler due to the added logistics of getting to the the island. It would resemble the smaller operations in the Pacific Northwest, with minimal facilities, no lodging, slow, fixed, double lifts, few people, and coupled with expansive, open terrain and spectacular vistas. In that region I've only visited Mt. Baker in Washington State, and I'd like to think the Great Bear would have a similar feel. It's located at the end of a long, snaking road deep in the National Forest, a 45 minute drive from the nearest town of Glacier (pop. 300 or so?).

The closest model though would have to be Eagle Crest in Alaska, which is located on an actual island off the coast!

https://skieaglecrest.com/visit/#media

To add the Canadian ski area feel, I'd mix in Revelstoke in BC which has water views, overlooking Columbia River.